Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6663502 | Customizable golf putter head | Michael J. Nelson, Douglas W. Anderson | 2003-12-16 |
| 6659883 | Customizable golf putter head | Michael J. Nelson, Douglas W. Anderson | 2003-12-09 |