Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8033929 | Golf club head | Hisashi Yamagishi | 2011-10-11 |
| 7914396 | Golf club head | Hisashi Yamagishi, Hideo Matsunaga | 2011-03-29 |
| 7878923 | Golf club head | Hisashi Yamagishi | 2011-02-01 |