Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4946144 | External clamping band for air spring | Keith E. Hoffman | 1990-08-07 |
| 4899995 | Clamp ring assembly for air spring | Keith E. Hoffman, David A. Weitzenhof | 1990-02-13 |
| 4798369 | Ultrasonic air spring system | David A. Weitzenhof | 1989-01-17 |
| 4796870 | Suspension system for vehicles containing combination isolator mount and air spring closure | Keith E. Hoffman | 1989-01-10 |
| 4793598 | Air spring having internal sealing band and method of installing same | David A. Weitzenhof | 1988-12-27 |
| 4787607 | Air spring having internal sealing band and method of installing same | Keith E. Hoffman | 1988-11-29 |
| 4787606 | Beadless air spring | Robert S. Harris | 1988-11-29 |
| 4762308 | Damping valve for air spring suspension systems | — | 1988-08-09 |
| 4718650 | Air spring for vehicle | — | 1988-01-12 |
| 4712776 | Air spring suspension system | David A. Weitzenhof | 1987-12-15 |