Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6481982 | Diaphragm pump having a mechanism for preventing the breakage of the diaphragm when a discharge check valve is not completely closed due to the insertion of foreign matter into the valve | — | 2002-11-19 |
| 6276232 | Stroke length regulator | Eiichi Nagayama | 2001-08-21 |