Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865301 | Apparatus for handling workpieces | — | 1989-09-12 |
| 4865521 | Vacuum breaking device for ejector pump | Akira Yamaguchi | 1989-09-12 |
| 4861232 | Vacuum generating device | Akira Yamaguchi | 1989-08-29 |
| 4861952 | Pressure activated switch | — | 1989-08-29 |
| 4848392 | Solenoid on-off valve | Akira Yamaguchi | 1989-07-18 |