Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10914299 | Diaphragm pump comprising dust suction from below | Frank Hannemann, Sebastian Rahm | 2021-02-09 |
| 9227152 | Modified gas feed element for use in gasification plants having dry fuel introduction | Ronny Ehrich, Lutz Güldenpfennig, Stefanie Henker, Frank Kirsch | 2016-01-05 |
| D263419 | Casting for low profile fireplace heat exchanger | W. James Sirois | 1982-03-16 |
| D263418 | Low profile fireplace heat exchanger | W. James Sirois | 1982-03-16 |
| D263070 | Low profile forced air fireplace furnace | W. James Sirois | 1982-02-16 |
| D260925 | Casting for fireplace heat exchanger | W. James Sirois | 1981-09-22 |
| D259657 | Forced air fireplace furnace | W. James Sirois | 1981-06-23 |
| D259585 | Fireplace heat exchanger | W. James Sirois | 1981-06-16 |