Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4480828 | Muted rhythm indicating exercisers | — | 1984-11-06 |
| 4366956 | Rhythm indicating exercisers | — | 1983-01-04 |
| 4278248 | Rhythm indicating exercisers | — | 1981-07-14 |
| 4274673 | Disposable adjustable headrest and pillow | — | 1981-06-23 |
| 4253701 | Disposable back and head sheet with use detector | — | 1981-03-03 |
| 4206945 | Back and head sheet | — | 1980-06-10 |
| 4183524 | Practice net | Warren M. Kifferstein | 1980-01-15 |