Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D420081 | Sole design for golf club head | Richard C. Helmstetter, D. Clayton Evans, Roger Cleveland | 2000-02-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D420081 | Sole design for golf club head | Richard C. Helmstetter, D. Clayton Evans, Roger Cleveland | 2000-02-01 |