Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4669579 | Group supervision apparatus for an elevator | — | 1987-06-02 |
SO
Syouichi Ookubo
Overall (All Time): #3,975,497 of 4,157,543Top 100%
1
Patents All Time