Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815574 | Frictionless damper | David A. Lee | 1989-03-28 |
| 4773164 | Self-aligning caliber bar | David A. Lee, John J. Frost | 1988-09-27 |
| 4768627 | Frictionless hydraulic damper and damper-snubber | — | 1988-09-06 |
| 4730706 | Snubber with integral test structure | David A. Lee | 1988-03-15 |
| 4718648 | Tension-compression liquid spring unit | — | 1988-01-12 |
| 4638895 | Frictionless hydraulic damper and damper-snubber | David A. Lee | 1987-01-27 |
| 4591033 | Shock absorber with fluid amplified flow at central portion of piston head | — | 1986-05-27 |
| 4582303 | Seal protecting construction for liquid spring | — | 1986-04-15 |
| 4579187 | Multi-terrain stores vehicle with air cushion and integral hardening means | — | 1986-04-01 |
| 4558767 | Fluid amplified shock absorber with rebound stiffening construction | — | 1985-12-17 |
| 4532856 | End cap for fluid cylinder | — | 1985-08-06 |
| 4389045 | Liquid energy absorber device | — | 1983-06-21 |
| 4254988 | Construction for isolating crane cab operator from cab movement | Raymond A. Piziali | 1981-03-10 |