Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4377617 | Loudspeaker diaphragm and process for producing same | Akira Ikei, Motoharu Akahama, Takashi Onogi | 1983-03-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4377617 | Loudspeaker diaphragm and process for producing same | Akira Ikei, Motoharu Akahama, Takashi Onogi | 1983-03-22 |