Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5020169 | Elevation bed | Kiyoshi Abe, Hitoshi Takei, Kenji Sato | 1991-06-04 |
| 4837877 | Elevation bed | Akio Okada, Kiyoshi Abe, Katsuhiro Udagawa, Fumitoshi Okazaki, Kouji Fujino | 1989-06-13 |