Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9222590 | Ventilating and evacuating valve for conduit pipes and/or braces | Tobias Sperl | 2015-12-29 |
| 7921868 | Airing and venting elements for pipes and fittings | Stefan Goetzinger | 2011-04-12 |