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DOORBELL COMMUNICATION SYSTEMS AND METHODS

14/861,613 | U.S. Patent Application

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Location ELECTRONIC
Filed Sept. 22, 2015
Examiner JARED T WALKER
Class 348
Art Group 2486
Patent No. 10,044,519
Case Type Utility - 348/143000
Status Patented Case
Parent 14/748,054 Patented
Parent 14/813,479 Patented
Parent 62/139,497 Expired
Parent 14/737,411 Patented
Parent 14/728,975 Patented
Parent 14/714,577 Patented
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Last Updated: 4 years, 2 months ago
Date # Transaction