Wireless digital doorbell
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Claims
The ornamental design for a wireless digital doorbell, as shown and described.
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Type: Grant
Filed: Apr 30, 2020
Date of Patent: Jun 14, 2022
Inventor: Yaohua Chen (Yueqing)
Primary Examiner: George D. Kirschbaum
Assistant Examiner: Lillian Windham
Application Number: 29/733,288