Patents/Inventors

Duanduan Li

ZhangjiakouCN2 patents

2 Patents

US125794532026
Safety Interlock Failure Prediction Method and Roll Production System
Zhangjiakou Cigarette Factory Co., Ltd.
0 cites
US122627312025
Cut-stem Separating and Baffling Apparatus and Primary Air Separation Apparatus
Zhangjiakou Cigarette Factory Co., Ltd.
0 cites