Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8881499 | Under water hydrogen and oxygen powered hydraulic impulse engine | Timothy Dolan | 2014-11-11 |
| D573017 | Soda can top with straw | — | 2008-07-15 |
| 6860221 | Tubular boat having modular construction | — | 2005-03-01 |
| 5318490 | Exercise apparatus | Cole Dalton, Lawrence J. Graf | 1994-06-07 |
| 5254059 | Exercise apparatus | Brian A. Arthur, Paul T. Dunham, Lawrence J. Graf | 1993-10-19 |
| D328770 | Climbing exerciser | Paul T. Dunham, James S. Birrell, Timothy O. Armstrong | 1992-08-18 |
| 5129873 | Exercise apparatus | Paul T. Dunham | 1992-07-14 |