Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5314321 | Screw-type rotary fluid machine including rotors having treated surfaces | Akihiko Yamamoto, Toshihiro Yamada, Tatsuo Natori, Kotaro Naya, Motohiro Satoo +3 more | 1994-05-24 |