Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5106065 | Self-blocking gas spring with temperature-responsive bypass valve | Robert G. Zambelli | 1992-04-21 |
| 4684098 | Support column with gravity retention means | Lee T. Lamond | 1987-08-04 |
| 4640484 | Support column with gravity dependent retention means | Lee T. Lamond | 1987-02-03 |