Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7341548 | Ball and frame exercising apparatus | Charles J. Heitzman | 2008-03-11 |
| D509548 | Exercising device including a resilient ball confined within a frame | Charles J. Heitzman | 2005-09-13 |