Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D486194 | Putter head | Richard C. Helmstetter, Ronald K. Hettinger | 2004-02-03 |
| D485592 | Putter head | Ronald H. Hettinger, Richard C. Helmstetter | 2004-01-20 |
| D485320 | Putter head | Richard C. Helmstetter, Ronald K. Hettinger | 2004-01-13 |
| D485321 | Putter head | Robert R. Lang, Richard C. Helmstetter, Augustin W. Rollinson | 2004-01-13 |