Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5801525 | Frequency discriminating power sensor | William W. Oldfield, Michael Osborne | 1998-09-01 |
| 5181723 | Golf practice device | — | 1993-01-26 |
| 5000457 | Golf training device | — | 1991-03-19 |
| 4917385 | Golf training device | — | 1990-04-17 |