Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D300554 | Diaphragm from a diaphragm valve | Hideaki Hatanaka | 1989-04-04 |
| D299521 | Diaphragm valve | Toyoji Muratani | 1989-01-24 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D300554 | Diaphragm from a diaphragm valve | Hideaki Hatanaka | 1989-04-04 |
| D299521 | Diaphragm valve | Toyoji Muratani | 1989-01-24 |