Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4234813 | Piezoelectric or pyroelectric polymer input element for use as a transducer in keyboards | Hiroji Ohigashi | 1980-11-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4234813 | Piezoelectric or pyroelectric polymer input element for use as a transducer in keyboards | Hiroji Ohigashi | 1980-11-18 |