Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4939321 | Pressure switch with laminated diaphragm | Hazime Tanaka, Keiji Sasaki | 1990-07-03 |
| 4853504 | Triple action pressure switch apparatus | Hazime Tanaka, Keiji Sasaki | 1989-08-01 |
| 4820890 | Three-function pressure switch | Yuuichi Tamura | 1989-04-11 |