| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 2 | |
| #2 | Switzerland | 2 | |
| #3 | Spain | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | United States | 2 | |
| #6 | Germany | 1 | |
| #7 | Denmark | 1 |
| # | Technology | |
|---|---|---|
| #1 | Mountings for cannons and pistols | |
| #2 | Motor vehicles | |
| #3 | Couplings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lehmann Hermann | 10 |
| #2 | Hohnberg Fritz | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1227161A | Recoil-reducing means for guns. | |
| US988791A | Recoil-gun. | |
| GB190812231A | Improvements in or relating to Barrel Recoil Guns. | |
| GB189629811A | Improvements in and connected with Portemonnaies, Pouches, Bags and the like. |