Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5613840 | Pump including a control valve and sealing member | Kazuyoshi Ishizaki, Masateru Yamamuro, Atsushi Ishizuka, Miyoko Hamao | 1997-03-25 |
| 5595478 | Pump and control valve with annular sealing member to prevent corrosion | Kazuyoshi Ishizaki, Masateru Yamamuro, Atsushi Ishizuka, Miyoko Hamao | 1997-01-21 |