Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10610711 | Firestop collar | Herbert Muenzenberger, Hans Henning Artmann, Egon Berghofer | 2020-04-07 |
| 10596399 | Firestop collar | Herbert Muenzenberger, Hans Henning Artmann, Egon Berghofer | 2020-03-24 |