Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6405834 | Elevator maintenance/operation apparatus | Akihiro Chida, Junichiro Ishikawa, Shigeki Yamakawa, Hiroshi Ando | 2002-06-18 |
| 5873434 | Brake apparatus for an elevator hoisting machine | Kazuhiko Sugita | 1999-02-23 |