Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6411138 | Buzzer drive circuit | Hirotsugu Matsuura, Manabu Matsuo | 2002-06-25 |
SY
Shigeyuki Yamakita
Overall (2002): #116,413 of 266,432Top 45%
1
Patents 2002