Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875402 | Recoil brake for a gun having a heat equalization and indication device | — | 1989-10-24 |
| 4867038 | Recoil brake for a gun | — | 1989-09-19 |
| 4838144 | Automatic loading device for a gun | Adolf P. Bierwirth, Walter Sauerwald, Hans Hulsewis | 1989-06-13 |