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6,767,470 B2 CH20 INCORPORATED (OWNER)MERAS ENGINEERING INC. (3RD PTY. REQ.)STAINBROOK & STAINBROOK, LLP

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METHOD FOR CLEANING AND MAINTAINING WATER DELIVERY SYSTEMS

90/13,123 | U.S. Patent Application

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Location ELECTRONIC

Filed Jan. 17, 2014

Examiner SEAN E VINCENT

Class 210

Art Group 3991

Case Type Re-Examination - 210/699000

Status Reexamination Certificate Issued

Parent 09/921,843 Patented

Parent 60/223,215 Expired

Parent 60/280,447 Expired

Last Updated: 4 years, 11 months ago

Date	#	Transaction
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METHOD FOR CLEANING AND MAINTAINING WATER DELIVERY SYSTEMS

90/13,123 | U.S. Patent Application

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