Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11272819 | Hose valve sub-assembly apparatus and method for retractable hose vacuum systems | Rod Drivstuen | 2022-03-15 |
| 10010229 | Hose valve apparatus and method for retractable hose vacuum systems | Rod Drivstuen | 2018-07-03 |
| 8479353 | Hose valve apparatus and method for retractable hose vaccum systems | Rod Drivstuen | 2013-07-09 |
| 5499959 | Upper body exercise apparatus | Fred H. Holmes, James A. Duncan | 1996-03-19 |
| 5348519 | Exercise and diagnostic apparatus and method | Jeffrey Prince, Philip T. Dempster, Jody Ono | 1994-09-20 |
| 5312313 | Device to prevent binding of a guidance system for an upper body exercise apparatus | Fred H. Holmes, James A. Duncan | 1994-05-17 |