Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7256342 | Sound pickup device for percussion instrument | Takashi Hagiwara, Masako Fukunaka | 2007-08-14 |
KO
Kengo Oyama
Overall (All Time): #3,393,379 of 4,157,543Top 85%
1
Patents All Time