Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE36298 | Vehicle | Richard Scherrer, Denys D. Overholser | 1999-09-14 |
| 5351564 | Pipeline inspection vehicle | Roger P. Ashworth | 1994-10-04 |
| 5250950 | Vehicle | Richard Scherrer, Denys D. Overholser | 1993-10-05 |
| 5239754 | Power take-off system for chain saw | William L. Watson | 1993-08-31 |
| 5123630 | Portable winch | William L. Watson | 1992-06-23 |
| 5016486 | Reversing drive mechanism | William L. Watson | 1991-05-21 |
| 4670164 | Liquid polymer containing compositions for thickening aqueous systems | Keith W. Sharp | 1987-06-02 |
| 4622153 | Liquid polymer containing compositions for thickening aqueous systems | Keith W. Sharp | 1986-11-11 |
| 4496284 | Helicopter rotors | — | 1985-01-29 |
| 4477224 | Helicopter rotor | — | 1984-10-16 |
| 4441384 | Freewheel devices | Richard G. Buswell, James E. Saunders | 1984-04-10 |
| 4436483 | Helicopter rotors | — | 1984-03-13 |
| 4307996 | Helicopter rotors | — | 1981-12-29 |
| 4300855 | Rotatable ice-formation-preventing device | — | 1981-11-17 |
| 4231705 | Helicopter rotor | — | 1980-11-04 |
| 4203709 | Helicopter rotor and blade connection | — | 1980-05-20 |