Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875839 | Scroll member for use in a positive displacement device, and a method for manufacturing the same | Hirotsugu Sakata, Hiroaki Murasaki, Makoto Hayano, Hitoshi Hattori, Kouichi Yoneyama +3 more | 1989-10-24 |