Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6421449 | Speaker | Akinori Hasegawa, Masahide Onishi | 2002-07-16 |
| 6370253 | Sound reproducing device | Masahide Onishi, Akinori Hasegawa | 2002-04-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6421449 | Speaker | Akinori Hasegawa, Masahide Onishi | 2002-07-16 |
| 6370253 | Sound reproducing device | Masahide Onishi, Akinori Hasegawa | 2002-04-09 |