Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6428426 | Golf club striking plate with variable bulge and roll | Richard C. Helmstetter, Roger Cleveland, D. Clayton Evans | 2002-08-06 |
| D457585 | Scoreline pattern for golf club head | Augustin W. Rollinson, Roger Cleveland, Richard C. Helmstetter | 2002-05-21 |