Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853504 | Triple action pressure switch apparatus | Hazime Tanaka, Keiji Sasaki | 1989-08-01 |
| 4820890 | Three-function pressure switch | Yuuichi Tamura | 1989-04-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853504 | Triple action pressure switch apparatus | Hazime Tanaka, Keiji Sasaki | 1989-08-01 |
| 4820890 | Three-function pressure switch | Yuuichi Tamura | 1989-04-11 |