Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6411138 | Buzzer drive circuit | Shigeyuki Yamakita, Manabu Matsuo | 2002-06-25 |
HM
Hirotsugu Matsuura
Overall (2002): #205,957 of 266,432Top 80%
1
Patents 2002