Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6149531 | Method for training golf putting skills | — | 2000-11-21 |
| 6149537 | Methods for training golf putting skills | — | 2000-11-21 |
| 6004230 | Methods for training golf putting skills | — | 1999-12-21 |
| 5968297 | Workpiece treating apparatus and method of treating same | James Spencer | 1999-10-19 |
| 5807449 | Workpiece treating apparatus and method of treating same | James Spencer | 1998-09-15 |
| 5788588 | Putting training method | — | 1998-08-04 |