| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 4 | |
| #2 | Denmark | 4 | |
| #3 | United Kingdom | 4 | |
| #4 | United States | 4 | |
| #5 | Germany | 3 | |
| #6 | Australia | 1 | |
| #7 | Switzerland | 1 | |
| #8 | Spain | 1 | |
| #9 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Weapons |
| # | Technology | |
|---|---|---|
| #1 | Mountings for cannons and pistols |
| # | Name | Total Patents |
|---|---|---|
| #1 | Shepherd Charles M | 2 |
| #2 | Hoagland Reginald W | 2 |
| #3 | Hudson Robert F | 2 |
| #4 | Robert Fletcher Hudson | 1 |
| #5 | Guns Inc Automatic | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2192677A | Cartridge feed for guns | |
| US2135005A | Firing pin arrangement for guns | |
| AU2540630B | Improvements in automatic guns | |
| GB356230A | Improvements in automatic guns | |
| ES117090A1 | Improvements in automatic cannons. | |
| GB356224A | Improvements in or relating to muzzle attachments for diminishing recoil in automatic guns | |
| US1786207A | Machine gun | |
| US1749137A | Machine gun |