Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11117433 | Integrated bar-pin clevis joint connection | Marc Johnson, Jeffrey M. Galla | 2021-09-14 |
| 11014541 | Semi-trailer landing gear actuator | Richard Allen Conaway | 2021-05-25 |
| 9688327 | Auxiliary axle and suspension assembly | Daniel R. Dykstra, Marc Johnson, Doug Thole, Boyd Freeman | 2017-06-27 |
| 9481416 | Auxiliary axle and suspension assembly | Daniel R. Dykstra, Marc Johnson, Doug Thole, Boyd Freeman | 2016-11-01 |
| 9290221 | Auxiliary axle and suspension assembly | Daniel R. Dykstra, Marc Johnson, Doug Thole, Boyd Freeman | 2016-03-22 |
| 8967639 | Auxiliary axle and suspension assembly | Daniel R. Dykstra, Marc Johnson, Doug Thole, Boyd Freeman | 2015-03-03 |
| 8894039 | Single ratchet actuator with dual air drivers | — | 2014-11-25 |
| 8485543 | Independent suspension and steering assembly | Gregory A. Richardson, John Hinz | 2013-07-16 |
| 7416200 | Vehicle suspension assembly | Tave Hass, Marc Johnson, Mark Molitor | 2008-08-26 |
| 6412790 | Vehicle suspension and rotary height control valve for same | Thomas A. McKenzie | 2002-07-02 |
| 6220587 | Vibration dampening assembly | Thomas A. McKenzie | 2001-04-24 |
| 5957231 | Vehicle cab suspension unit | Douglas G. Stuyvenberg | 1999-09-28 |
| 5253853 | Vibration dampening device | Thomas A. McKenzie | 1993-10-19 |
| 5109939 | Vibration dampening suspension device for the cab of a truck vehicle | Thomas A. McKenzie | 1992-05-05 |