Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4934488 | Door lock for an elevator car | — | 1990-06-19 |
SU
Setsuo Umemura
Overall (All Time): #3,905,288 of 4,157,543Top 95%
1
Patents All Time