Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5702311 | Multi-piece solid golf ball | Hisashi Yamagishi | 1997-12-30 |
| 5695413 | Solid golf ball | Hisashi Yamagishi, Hiroto Sasaki, Hideo Watanabe, Yasushi Ichikawa | 1997-12-09 |
| 5688595 | Multi-piece solid golf ball | Hisashi Yamagishi, Yasushi Ichikawa, Junji Hayashi | 1997-11-18 |
| 5601503 | Golf ball | Hisashi Yamagishi, Jun Shindo | 1997-02-11 |