Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9982805 | Device for passing pipes or cables through an opening in a building | Christian Förg, Rudolf Semler, Thomas Monden | 2018-05-29 |
| 9861843 | Bracket for a firestop collar and use of this bracket | Rudolf Semler | 2018-01-09 |