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DOORBELL COMMUNICATION AND ELECTRICAL SYSTEMS

15/990,601 | U.S. Patent Application

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Location ELECTRONIC
Filed May 26, 2018
Examiner THOMAS S MCCORMACK
Class 340
Art Group 2683
Patent No. 10,440,166
Case Type Utility - 340/328000
Status Patented Case
Parent 15/673,896 Patented
Parent 14/588,881 Patented
Parent 14/474,210 Patented
Parent 14/474,209 Patented
Parent 14/861,613 Patented
Parent 14/671,677 Patented
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Last Updated: 2 years, 5 months ago
Date # Transaction