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DOORBELL COMMUNICATION AND ELECTRICAL SYSTEMS

14/474,210 | U.S. Patent Application

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Location ELECTRONIC
Filed Sept. 1, 2014
Examiner JARED T WALKER
Class 348
Art Group 2486
Patent No. 8,953,040
Case Type Utility - 348/143000
Status Patented Case
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
Parent 14/98,772 Patented
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Last Updated: 4 years, 2 months ago
Date # Transaction