Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D552703 | Perimeter-weighted back portion with an integrated trapezoidal weight portion for an iron golf club | Isamu Toshinari, Tomomi Watanabe, Mamoru Saraie, Kiyotaka Chaen | 2007-10-09 |