Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE50337 | Hydraulic leveraged overhead door assembly | David A Crown | 2025-03-18 |
| 9631418 | Hydraulically operated overhead tilt-up door with stabilizer | — | 2017-04-25 |
| 9567789 | Hydraulically operated overhead tilt-up door | — | 2017-02-14 |
| 8714229 | Hydraulic leveraged overhead door assembly | David A Crown | 2014-05-06 |