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Click below for detailed party information:

Inventors

MASAYUKI NISHIGUCHI YOSHIHITO FUJIWARA

Assignee

IRONWORKS PATENTS LLC

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SONY CORPORATION, Assignor SCA IPLA HOLDINGS INC., Assignor MOBILEMEDIA IDEAS LLC, Assignor

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AUDIO SIGNAL REPRODUCING APPARATUS

07/600,818 | U.S. Patent Application

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Location ELECTRONIC

Filed Oct. 22, 1990

Examiner FORESTER W ISEN

Class 381

Art Group 2605

Patent No. 5,640,458

Case Type Utility - 381/098000

Status Patented Case

Child 08/747,910 Patented

Child 90/8,043 -

Child 08/887,417 Patented

Child 09/489,774 Patented

Child 09/842,542 Patented

Child 10/96,621 Patented

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Last Updated: 5 years, 1 month ago

Date	#	Transaction
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AUDIO SIGNAL REPRODUCING APPARATUS

07/600,818 | U.S. Patent Application

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