Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678942 | Ball-point pen | Seiichi Kobayashi, Toru Kitao | 1997-10-21 |
| 5600613 | Optical information recording/reproduction apparatus and method using an ultrasonic wave motor to drive one of an optical head and a recording medium | Hiroto Kitai | 1997-02-04 |