Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8091858 | Shut-off system for large conduit cross-sections, having a swing flap | Matthias Krüger | 2012-01-10 |
| 6588768 | Device for sealing | — | 2003-07-08 |
| 5667226 | Device for providing a seal between two parts of an installation | — | 1997-09-16 |
| 5193823 | Resilient metallic sealing member | — | 1993-03-16 |
| 5159954 | Hinged safety-valve for large ducts | — | 1992-11-03 |
| 4515686 | Method for the operation of an air separator, and an air separator for the practice of the method | — | 1985-05-07 |
| 4412556 | Device for shutting off large pipes | — | 1983-11-01 |
| 4398697 | Pivotal flap | — | 1983-08-16 |
| 4278236 | Slide valve for pipelines | — | 1981-07-14 |