Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D385933 | Golf putter head with recessed and fluted rear side | Richard C. Helmstetter | 1997-11-04 |
| D378113 | Golf putter head with fluted rear side and stepped top wall | Richard C. Helmstetter | 1997-02-18 |