Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6422785 | Track belt placer for placing construction materials and method for placing construction materials | Thomas A. Ruggles | 2002-07-23 |
| 4721428 | Tennis ball retriever | Daniel Rohrer | 1988-01-26 |
| 4684126 | General purpose exercise machine | William T. Dalebout, Sohrab Vassoughi, William J. Martinell, Steven W. Martinell, Robert L. Marchant | 1987-08-04 |