SZ

Sisi Zheng

OE Otis Elevator: 11 patents #133 of 1,840Top 8%
Overall (All Time): #432,230 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
D1071767 Operation panel for the disabled Zhe Li 2025-04-22
D1069626 Fire alarm device Zhe Li 2025-04-08
D1066092 Display Zhe Li 2025-03-11
D1060095 Operation panel for the disabled Zhe Li 2025-02-04
D1052109 Elevator hall call board Zhe Li 2024-11-19
D1047254 Elevator hall lantern Zhe Li 2024-10-15
D846150 Elevator car Wei Li, Zhe Li 2019-04-16
D846149 Elevator car Wei Li, Zhe Li 2019-04-16
D846148 Elevator car Zhe Li, Wei Li 2019-04-16
D844839 Elevator car Wei Li, Zhe Li 2019-04-02
D843633 Lighting fixture Zhe Li 2019-03-19