Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6572489 | Golf club head | Masahiko Miyamoto, Yoh Nishizawa | 2003-06-03 |
| 6546802 | Evaluation method of golf club and golf club | Takayuki Shiraishi, Masayoshi Kogawa, Yoh Nishizawa | 2003-04-15 |