Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5278679 | Sub-diffraction limited focusing lenses | Jeffrey Davis | 1994-01-11 |
| 4813761 | High efficiency spatial masks | Jeffrey Davis, Glenn W. Bach, Roger A. Lilly | 1989-03-21 |
| 4316686 | Automobile tie down assembly for vehicle carriers | Don J. Cottrell | 1982-02-23 |
| D258815 | Vehicle tie-down track assembly | Don J. Cottrell | 1981-04-07 |
| 4227734 | Car haul trailer | Don J. Cottrell | 1980-10-14 |
| D255343 | Vehicle transport trailer | Don J. Cottrell | 1980-06-10 |