Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D405490 | Golf putter head | John M. Hogan, Armand H. Larsen, Lawrence Ellgass, Donald A. Sokol | 1999-02-09 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D405490 | Golf putter head | John M. Hogan, Armand H. Larsen, Lawrence Ellgass, Donald A. Sokol | 1999-02-09 |