Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6505849 | Ball clamp trailer coupler | — | 2003-01-14 | |
| 6352279 | Ball clamp trailer coupler | — | 2002-03-05 | |
| 6267357 | Drop foot jack | Robert E. Proudfoot | 2001-07-31 | |
| 6000710 | Trailer coupler lock | Richard L. Schocker | 1999-12-14 | |
| 5346153 | Winch strap anchor | — | 1994-09-13 | |
| 4866456 | Horizon-to-horizon satellite antenna drive mechanism | — | 1989-09-12 | $21,455,000 |
| 4776607 | Trailer coupler with tamper resistant lock mechanism | Karl E. Richter, Steven L. Permut, Stephen T. Bemis | 1988-10-11 | $29,692,000 |
| 4623125 | Swivel jack | — | 1986-11-18 | $24,446,000 |
| 4566674 | Neutral winch | Karl E. Richter | 1986-01-28 | $16,477,000 |
| 4556233 | Trailer coupler | Karl E. Richter | 1985-12-03 | $13,846,000 |
| 4416366 | Emergency stop mechanism | Michael C. Maryonovich | 1983-11-22 | $14,055,000 |
| 4359207 | Emergency stop mechanism for the payload of a lifting mechanism | Michael C. Maryonovich | 1982-11-16 | $8,679,000 |