Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D644285 | Golf grip | David Keith Gill | 2011-08-30 |
| 7909705 | Variable mass grip | David Keith Gill, William Wendell Andersen, Bruce John Norton | 2011-03-22 |
| 7399235 | Variable mass grip | David Keith Gill, William Wendell Andersen, Bruce John Norton | 2008-07-15 |