Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7159502 | Sliding block breech mechanism for a cannon | Hans Hulsewis, Eckehard Bohnsack | 2007-01-09 |
| 6931776 | Apparatus for the section-wise autofrettage of gun barrels | Hartmut Wagner, Hans Hulsewis, Berthold Baumann | 2005-08-23 |
| 6899008 | Gun barrel having a muzzle brake | — | 2005-05-31 |
| 6595100 | Weapon | Hans Hulsewis | 2003-07-22 |
| 6543330 | Gun for firing electrically-ignitable cartridges containing electronic components | Hans Hulsewis | 2003-04-08 |
| 6006645 | Externally driven transverse wedge-type breechblock for a large-caliber weapon | Hans Hulsewis | 1999-12-28 |
| 5307724 | Ejector system and use of the system in large caliber guns | Karl-Egon Janssen | 1994-05-03 |
| 5042361 | Breechblock mechanism for a gun | Karl-Egon Janssen | 1991-08-27 |
| 4924748 | Hand-operated lever for opening and closing a wedge-like breechblock | — | 1990-05-15 |
| 4569269 | Manual actuator for recoil-operated breech | — | 1986-02-11 |
| 4562767 | Muzzle recoil dampener | Karl-Egon Janssen | 1986-01-07 |