Patents/Inventors

Changcheng Li

BeijingCN3 patents

4 Patents

US122530902025
Fan and Cleaning Device
BEIJING ROBOROCK TECHNOLOGY CO., Ltd.
0 cites
US122095912025
Fan and Cleaning Apparatus
Beijing Roborock Technology Co., Ltd.
0 cites
US121994862025
Stator, Fan, and Cleaning Device
Beijing Roborock Technology Co., Ltd.
0 cites
US121884762025
Fan and Cleaning Device
BEIJING ROBOROCK TECHNOLOGY CO., Ltd.
0 cites