Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4353432 | Electro-dynamic speaker | Hiroyuki Takewa, Hiroshi Yamamoto | 1982-10-12 |
MH
Mitsuhiro Hasegawa
Overall (1982): #42,677 of 81,411Top 55%
1
Patents 1982