Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11661778 | High speed overhead door | — | 2023-05-30 |
| 10253557 | Roller shutter for opening and closing a doorway | — | 2019-04-09 |
| 9957749 | Sealing device for sealing a gap between a lintel and a roller shutter and a roller shutter with such a sealing device | — | 2018-05-01 |
| 9915094 | Roller shutter for opening and closing a doorway | — | 2018-03-13 |
| 8985179 | System for stabilizing the top lamella against wind load by using a linear chain | Meinolf Steffen, Holger Siewert | 2015-03-24 |
| 8684064 | High speed rollup door with rollable door leaf | — | 2014-04-01 |
| 8371357 | System to guide the slats of an industrial roller door to reduce damages after crash | — | 2013-02-12 |
| 8267146 | Adjustable counterbalance system for roller doors | — | 2012-09-18 |
| 6883577 | Rollup door with rollable door leaf | — | 2005-04-26 |