Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5001963 | Differential pressure piston-combustion chamber for barreled weapons | Hans Sackenreuter | 1991-03-26 |
| 4993310 | Sealing for the differential pressure piston-fuel chamber systems of firearms | Hans Sackenreuter | 1991-02-19 |