Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5281774 | Drive control unit for hydraulic elevator | — | 1994-01-25 |
| 4779708 | Control device for an elevator | Isao Sasao, Yoshio Miyanishi | 1988-10-25 |
| 4357996 | Speed control device for an elevator | Toshiaki Ishii | 1982-11-09 |