Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884812 | Golf club head | Yoichi Nagasaki, Itsushi Nagamoto, Toyohiko Tadokoro | 1989-12-05 |
| 4867458 | Golf club head | Noburoh Sumikawa | 1989-09-19 |
| 4848747 | Set of golf clubs | Toyohiko Tadokoro | 1989-07-18 |
| 4798383 | Golf club head | Yoichi Nagasaki, Itsushi Nagamoto, Toyohiko Tadokoro | 1989-01-17 |