Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815192 | Method of securing an elongated vibration amplifier member to an annular vibrating reed | Toshifumi Usui, Hisanobu Kanamaru, Kazuhiro Tsuruoka | 1989-03-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815192 | Method of securing an elongated vibration amplifier member to an annular vibrating reed | Toshifumi Usui, Hisanobu Kanamaru, Kazuhiro Tsuruoka | 1989-03-28 |