Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5979279 | Rapping device and rapping method | Kazuyuki Hironaga, Tadahiro Sawada | 1999-11-09 |
YM
Yoshichika Matsumoto
Overall (All Time): #3,666,288 of 4,157,543Top 90%
1
Patents All Time