Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887943 | Gas compressor of variable volume | Takeshi Kobayashi | 1989-12-19 |
| 4881878 | Gas compressor of variable volume | Takeshi Kobayashi | 1989-11-21 |
| 4824330 | Variable-capacity gas compressor | Takeshi Kobayashi | 1989-04-25 |