Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6437481 | Control device for vibration type motor and apparatus using thereof | Akira Senda | 2002-08-20 |
| 6430278 | System and device for detecting subscriber's busy hour | — | 2002-08-06 |