Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4351412 | Diaphragm for acoustic instruments and method of manufacturing the same | Tsunehiro Tsukagoshi | 1982-09-28 |
IY
Isao Yamamuro
Overall (1982): #57,194 of 81,411Top 75%
1
Patents 1982