Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6001023 | Angle activated training device for golfers | Gunther H. Steen | 1999-12-14 |
| 5672115 | Golf swing training device and method | Gunther H. Steen | 1997-09-30 |
| 5082262 | Training device for baseball batter and method therefor | — | 1992-01-21 |