Smart doorbell

Inventor: Chengfu Yu (Irvine, CA)

View Patent ↗

Loading inventors, assignments & file history…

Monitor This Case

Get email alerts when status or documents change.

Order Certified Copies

Most orders are placed with the USPTO same day — all within 24 business hours.

Pre-filled with this patent's details

Quick Facts

External Links

Claims (1)

The ornamental design for a smart doorbell, as shown and described.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 1, 2025

From: YU, CHENGFU

To: SHENZHEN DANALE TECHNOLOGIES CO., LTD.