Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10817002 | Gas valve and gas control device | Gerrit Jan Baarda, Erwin Kupers | 2020-10-27 |
| 10274195 | Air/gas admittance device for a combustion appliance | Erik Gankema, Milos Trenz, Frank van Prooijen, Jens Wubkes | 2019-04-30 |