Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4499727 | Hot gas engine | — | 1985-02-19 |
| 4478042 | Cylinder liner-regenerator unit for a hot gas engine | — | 1984-10-23 |
| 4472938 | Multi-cylinder, double-acting hot gas engine | — | 1984-09-25 |
| 4417443 | Multi-cylinder, double-acting hot gas engine | — | 1983-11-29 |
| 4261173 | Hot gas engine heater head | — | 1981-04-14 |
| 4249377 | Temperature sensing device for a hot gas engine heater head | Jan C. Bratt, Kjell Pettersson | 1981-02-10 |