Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5360290 | Underground drainage facility, vertical-shaft multi-stage adjustable vane pump, and method of running drainage pump | Masayuki Yamada, Saburo Maru | 1994-11-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5360290 | Underground drainage facility, vertical-shaft multi-stage adjustable vane pump, and method of running drainage pump | Masayuki Yamada, Saburo Maru | 1994-11-01 |