Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4709783 | Apparatus for installing escape device for slowly lowering a body | Tatsuo Waki, Yoshiki MIYATA | 1987-12-01 |
| 4655327 | Impeller type descent slowing device | Tazuo Waki, Hiroyuki Sugaya | 1987-04-07 |