Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880201 | Constant natural frequency, mechanical spring seat suspension | Harvey N. Tengler | 1989-11-14 |
| 4397440 | Vehicle seat having height adjustment, automatic weight adjustment and protected ride zone | Harvey N. Tengler | 1983-08-09 |
| 4244623 | Multi-position armrest | Harvey N. Tengler, Neal Charles Eriksson | 1981-01-13 |