Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5172894 | Dual elastomeric/fluid engine mount | Richard D. Hein, Donald L. Deane | 1992-12-22 |
| 5158269 | Dual/slipper shock mount | Richard D. Hein, Tony R. Jones, James R. Goewey | 1992-10-27 |
| 5131638 | Dual shock mount | Richard D. Hein | 1992-07-21 |