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DOORBELL COMMUNICATION SYSTEMS AND METHODS

14/463,548 | U.S. Patent Application

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Location ELECTRONIC
Filed Aug. 19, 2014
Examiner JARED T WALKER
Class 348
Art Group 2486
Patent No. 8,941,736
Case Type Utility - 348/143000
Status Patented Case
Parent 62/35,646 Expired
Parent 61/872,439 Expired
Parent 14/99,888 Patented
Parent 14/142,839 Patented
Parent 14/275,811 Patented
Parent 61/859,070 Expired
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Last Updated: 3 years, 9 months ago
Date # Transaction