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`US 6,393,497 B1
`(10) Patent N0.:
`(12) Unlted States Patent
`
`
`
`
`
`
`
`
`Arnold et al.
`(45) Date of Patent:
`May 21, 2002
`
`USOO6393497B1
`
`
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`
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`5,297,283 A
`
`5,307,490 A
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`53394513; 2
`a
`7
`5,386,568 A
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`
`
`
`
`6t
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`
`a1~
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`3/1994 Kelly, Jr. et al.
`
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`4/1994 DfiVidSOIl
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`3133: £1513? t
`1
`11 e a .
`11
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`1/1995 Wold et al.
`
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`
`
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`(List continued on next page.)
`FOREIGN PATENT DOCUMENTS
`
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`0 300 516 A2
`1/1989
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`8 33411 :33 g 31338
`0 472 874 A1
`3/1992
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`(List continued on next page.)
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`EP
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`EP
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`OTHER PUBLICATIONS
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`Sun Microsystems, Java Remote Method Invocation Speci-
`
`
`
`
`
`
`fication, Feb. 10, 1997, pp. 18—23.*
`
`
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`
`
`Aldrich et al., “Providing Easier Access to Remote Objects
`
`
`
`
`
`
`in Client—Server Systems,” System Sciences, 1998, Pro-
`
`
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`
`
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`ceedings of the 31st Hawaii Internat’l. Conference, Jan. 6—9,
`
`
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`1998, pp. 366—375.
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`(List continued on next page.)
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`Primary Examiner—Kenneth R. Coulter
`
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`
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`(74) Attorney, Agent, or Firm—Finnegan, Henderson,
`Farabow, Garrett & Dunner, L.L.P.
`
`
`
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`ABSTRACT
`
`
`
`(57)
`
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`Use of a smart proxy as a wrapper around a stub in a
`distributed system. Instead of receiving a stub as a result of
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`a remote procedure call, a caller receives a smart proxy
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`including the stub as an embedded object. The smart proxy
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`performs predefined processing associated With a remote
`
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`procedure call, the processing possibly occurring before,
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`during or after a response to the call.
`’
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`(75)
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`(54) DOWNLOADABLE SMART PROXIES FOR
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`PERFORMING PROCESSING ASSOCIATED
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`WITH A REMOTE PROCEDURE CALL IN A
`DISTRIBUTED SYSTEM
`
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`
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`Inventors: Kenneth C. R. C. Arnold, Lexington;
`James H. Waldo, Dracut; Robert
`
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`
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`Scheifler, Somerville; Ann M.
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`
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`Wollrath, Groton, all of MA (US)
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`(73) Assignee: Sun Microsystems, Inc., Palo Alto, CA
`(US)
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`( * ) Notice:
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`Subject to any disclaimer, the term of this
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`patent is extended or adjusted under 35
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`U.S.C. 154(b) by 0 days.
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`(21) Appl. No.: 09/044,930
`.
`.
`,
`
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`(22) Filed'
`Mar 20 1998
`
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`(51)
`..... G06F 13/00
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`(52)
`.. 709/330, 709/315
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`(58) Field of Search ................................. 709/300, 303,
`709/310, 315, 330
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`(56)
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`
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`
`LGE Exhibit-1006/Page 1 of 20
`LGE v. Uniloc
`
`LGE Exhibit-1006/Page 1 of 20
`LGE v. Uniloc
`
`

`

`
`
`US 6,393,497 B1
`
`
`Page 2
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`LGE Exhibit-1006/Page 2 0f 20
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`LGE Exhibit-1006/Page 2 of 20
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`

`

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`US 6,393,497 B1
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`Page 3
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`
`
`Birrell et al., Implementing Remote Procedure Calls, ACM
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`
`
`
`
`
`Transactions on Computer Systems, vol. 2, No. 1, Feb. 1984,
`
`
`pp. 39—59.
`
`
`
`
`
`
`
`
`
`
`IBM: Somobjects Developer Toolkit Users Guide, Version
`
`
`
`
`
`
`2.1, “Chapter 6 Distributed SOM (DSOM),” pp 6—1—6—90,
`Oct. 1994.
`
`
`
`
`
`
`
`
`Orfali R. et al., “The Essential Distributed Objects Survival
`
`
`
`
`
`
`
`Guide,” Chapter 11: Corba Commercial ORBs, John Wiley
`
`
`
`
`& Sons, Inc., (1996).
`
`
`
`
`
`
`
`Venners, B., “Jini Technology, Out of the Box”, Javaworld,
`Onlinel, pp 1—4, Dec. 1998.
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`* cited by examiner
`
`
`
`LGE Exhibit-1006/Page 5 of 20
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`LGE Exhibit-1006/Page 5 of 20
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`US. Patent
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`May 21, 2002
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`Sheet170f8
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`US 6,393,497 B1
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`LGE Exhibit-1006/Page 6 of 20
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`LGE Exhibit-1006/Page 6 of 20
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`
`US. Patent
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`May 21, 2002
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`Sheet 2 0f 8
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`US 6,393,497 B1
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`FIG.2
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`GE Exhibit-1006/Page 7 of 20
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`LGE Exhibit-1006/Page 7 of 20
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`US. Patent
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`May 21, 2002
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`Sheet 3 0f 8
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`US 6,393,497 B1
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`LGE Exhibit-1006/Page 8 of 20
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`LGE Exhibit-1006/Page 8 of 20
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`US. Patent
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`May 21, 2002
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`Sheet 4 0f 8
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`US 6,393,497 B1
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`404
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`
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`
`FIG.4
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`LGE Exhibit-1006/Page 9 of 20
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`LGE Exhibit-1006/Page 9 of 20
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`US. Patent
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`May 21, 2002
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`Sheet 5 0f 8
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`US 6,393,497 B1
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`LGE Exhibit-1006/Page 10 of 20
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`US. Patent
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`May 21, 2002
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`Sheet 6 0f 8
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`US 6,393,497 B1
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`LGE Exhibit-1006/Page 11 of 20
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`LGE Exhibit-1006/Page 11 of 20
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`

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`US. Patent
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`May 21, 2002
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`Sheet 7 0f 8
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`US 6,393,497 B1
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`M
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`CLIENT TRANSMITS A CALL OR REQUEST
`
`
`
`FOR A PARTICULAR OBJECT
`
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`
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` 701
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`SERVER RECEIVES THE CALL
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`SERVER RETURNS A SMART PROXY WITH AN
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`EMBEDDED STUB IN RESPONSE TO THE CALL
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`CLIENT INVOKES METHOD ON SMART PROXY
`
`
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`704
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`
`
`706
`
`YES
`
`PERFORM LOCAL
`PRE-PROCESSING
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`705
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`
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`PRE-PROCESSING
`
`REQUIRED?
`
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`707
`708
`
`
`
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`
`
`METHOD SERVICED
`CALL REMOTE OBJECT
`
`LOCALLY?
`
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`
`YES
`
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`
`709
`
`
`
`PERFORM REMOTE
`
`PROCESSING
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`
`
`PERFORM LOCAL
`
`PROCESSING
`
`
`
`
`
`
`
`
`
`712
`
`
`
`7“
`
`
`
`
`RETURN RESULT
`
`
`OF REMOTE
`
`PROCESSSING
`
`
`
`
`
`
`
`
`
`
`PERFORM (LOCAL)
`YES POST-PROCESSING
`
`
`
`
`POST-PROCESSING
`
`
`REQUIRED?
`
`
`
`713
`
`
`714
`
`
`
`NO
`
`
`
`RETURN METHOD
`
`
`CALL RESULT
`
`
`
`
`
`
`FIG. 7
`
`LGE Exhibit-1006/Page 12 of 20
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`LGE Exhibit-1006/Page 12 of 20
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`

`

` 801
`
`802
`
`
`
`UPDATED
`
`
`US. Patent
`
`
`
`
`May 21, 2002
`
`
`
`
`Sheet 8 0f 8
`
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`
`US 6,393,497 B1
`
`fl)
`
`
`
`
`
`
`
`PROCESSING
`
`
`INVOKED
`
`
`
`
`
`DOWNLOAD
`
`
`
`
`
`
`CODE AND
`
`
`
`PROCESSING
`
`UPDATE
`
`
`
`
`PROCESSING
`
`
`
`
`
`
`REQUIRED?
`
`
`
`
`
`804
`
`
`
`PERFORM
`
`
`PROCESSING
`
`
`
`
`
`
`FIG. 8
`
`LGE Exhibit-1006/Page 13 of 20
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`LGE Exhibit-1006/Page 13 of 20
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`

`

`
`
`US 6,393,497 B1
`
`
`1
`DOWNLOADABLE SMART PROXIES FOR
`
`
`
`
`PERFORMING PROCESSING ASSOCIATED
`
`
`
`WITH A REMOTE PROCEDURE CALL IN A
`
`
`
`
`
`DISTRIBUTED SYSTEM
`
`
`REFERENCE TO RELATED APPLICATIONS
`
`
`
`
`
`
`
`
`Provisional US. patent application No. 60/076,048,
`
`
`
`
`
`
`entitled “Distributed Computing System,” filed on Feb. 26,
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`
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`
`US. patent application Ser. No. 09/044,923, entitled
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`
`
`
`
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`
`“Method and System for Leasing Storage,” filed on the same
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`
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`
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`US. patent application Ser. No. 09/044,838, entitled
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`
`“Method, Apparatus, and Product for Leasing of Delegation
`
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`
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`
`Certificates in a Distributed System,” filed on the same date
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`
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`US. patent application Ser. No. 09/044,834, entitled
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`
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`
`“Method, Apparatus and Product for Leasing of Group
`
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`
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`
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`Membership in a Distributed System,” filed on the same date
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`
`“Deferred Reconstruction of Objects and Remote Loading
`
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`
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`
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`
`for Event Notification in a Distributed System,” filed on the
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`
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`
`
`US. patent application Ser. No. 09/044,938, entitled
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`
`
`
`
`“Methods and Apparatus for Remote Method Invocation,”
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`
`
`
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`
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`
`US. patent application Ser. No. 09/045,652, entitled
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`
`
`
`
`
`“Method and System for Deterministic Hashes to Identify
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`
`
`
`
`
`
`
`
`
`
`
`
`
`
`US. patent application Ser. No. 09/044,790, entitled
`
`
`
`
`
`
`
`“Method and Apparatus for Determining Status of Remote
`
`
`
`
`
`
`
`
`Objects in a Distributed System,” filed on the same date
`herewith.
`
`
`
`
`
`
`
`L.S. patent application Ser. \0. 09/044,917, entitled
`“Suspension and Continuation of Remote Methods,” and
`
`
`
`
`
`
`filed on the same date herewith.
`
`
`
`
`
`
`
`
`
`
`
`
`L.S. patent application Ser. \0. 09/044,835, entitled
`
`
`
`
`
`
`
`“Method and System for Multi-Entry and Multi-Template
`Matching in a Database,” filed on the same date herewith.
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`L.S. patent application Ser. \0. 09/044,839, entitled
`“Method and System for
`In-Place Modifications in a
`
`
`
`
`
`
`
`Database,” filed on the same date herewith.
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`L.S. patent application Ser. \0. 09/044,945, entitled
`
`
`
`
`
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`
`“Method and System for Typesafe Attribute Matching in a
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`
`
`
`
`
`
`
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`
`
`
`
`
`
`L .S. patent application Ser. \0. 09/044,931, entitled
`
`
`
`
`
`
`“Dynamic Lookup Service in a Distributed System,” filed on
`the same date herewith.
`
`
`
`
`
`
`
`
`
`
`
`
`L.S. patent application Ser. \0. 09/044,939, entitled
`
`
`
`
`
`
`
`“Apparatus and Method for Providing Downloadable Code
`
`
`
`
`
`
`for Use in Communicating with a Device in a Distributed
`
`
`
`
`
`
`
`System,” filed on the same date herewith.
`
`
`
`
`
`
`
`US. patent application Ser. No. 09/044,826, entitled
`
`
`
`
`
`
`
`“Method and System for Facilitating Access to a Lookup
`Service,” filed on the same date herewith.
`
`
`
`
`
`
`
`
`
`
`
`
`
`US. patent application No. 09/030,840, entitled “Method
`
`
`
`
`
`
`
`and Apparatus for Dynamic Distributed Computing Over a
`Network, ” and filed on Feb. 26