Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6368232 | Iron golf club heads, iron golf clubs and golf club evaluating method | Jiro Hamada | 2002-04-09 |
| 6344000 | Iron golf club heads, iron golf clubs and golf club evaluating method | Jiro Hamada | 2002-02-05 |
| 6344001 | Iron golf club heads, iron golf clubs and golf club evaluating method | Jiro Hamada | 2002-02-05 |
| 6086485 | Iron golf club heads, iron golf clubs and golf club evaluating method | Jiro Hamada | 2000-07-11 |