Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7287626 | Buffer device for elevator | Hiroshi Kigawa, Takashi Yumura, Sen Zhao | 2007-10-30 |
CZ
Chang-Ming Zhu
Overall (All Time): #3,399,442 of 4,157,543Top 85%
1
Patents All Time