Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10520186 | Method for operating a gas burner appliance | Piet Blaauwwiekel, Frank van Prooijen, Erwin Kupers | 2019-12-31 |
| 10247416 | Method for operating a gas burner | Wim Munsterhuis, Gerrit Jan Baarda, Piet Blaauwwiekel, Frank van Prooijen, Albert Hietkamp | 2019-04-02 |