Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834634 | Sliding-vane rotary compressor for bearing lubrication | — | 1989-05-30 |
| 4830590 | Sliding-vane rotary compressor | Seiji Sumikawa, Hidehiko Takayama, Yoshio Suzuki | 1989-05-16 |