Issued Patents 1997
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697853 | Hollow, metallic golf club head with relieved sole and dendritic structure | Richard C. Helmstetter | 1997-12-16 |
| 5669828 | Golf club metallic head formation | — | 1997-09-23 |
| D383512 | Golf putter head with undercut cavity back | Richard C. Helmstetter | 1997-09-09 |
| 5626530 | Golf club head with sole bevel indicia | Richard C. Helmstetter | 1997-05-06 |
| 5611741 | Hollow, large, metallic, golf club head | Richard C. Helmstetter | 1997-03-18 |
| 5605511 | Golf club head with audible vibration attenuation | Richard C. Helmstetter | 1997-02-25 |
| 5605510 | Golf putter with face plate insert | Richard C. Helmstetter | 1997-02-25 |
| D377674 | Golf club head | Richard C. Helmstetter | 1997-01-28 |