Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1040273 | Golf club head | Christopher G. Engel, Steven M. Mitzel, Douglas E. Roberts | 2024-08-27 |
| D1023198 | Golf club | Christopher G. Engel, Cameron J. Day, Douglas E. Roberts, Sean Tang | 2024-04-16 |
| D1017742 | Golf club | Christopher G. Engel, Cameron J. Day, Douglas E. Roberts, Sean Tang | 2024-03-12 |
| D1003378 | Golf club | Christopher G. Engel, Armando Herrera, Douglas E. Roberts, Sean Tang | 2023-10-31 |
| D943693 | Golf club | Christopher G. Engel, Armando Herrera, Douglas E. Roberts, Sean Tang | 2022-02-15 |