| 1921 JOHNSTON Gas Delayer For Firearms Patent |
| 1921 OSCAR ERICSSON Aiming Firearms Art Print |
| 1921 REMINGTON ARMS INC Safety Firearms Art |
| 1921 CRAIG Shock Diffuser For Firearms Patent |
| 1921 PEDERSEN Aiming Firearms Art Print Patent |
| 1921 NEWTON D BAKER Detachable Stock Firearms |
| 1921 MARLIN FIREARMS CORP Repeating Firearm Art |
| 1921 JOSEF Gun Lock Automatic Firearms Art Print |
| 1921 ALBERT Sighting Firearms Particularly Machine Guns |
| 1921 BURTON Sling Swivel Band Firearms Art Print |
| 1921 GRANT Magazine Catch Release Firearms Art |
| 1921 HALL Cleaning Rod For Firearms Patent Print |
| 1921 SEARLE Reloading Mechanism Magazine Firearms |
| 1921 ROSEBUSH Magazine For Hand Firearms Patent |
| 1921 BUTLER Bipod Rest For Firearms Patent Print |
| 1921 ARMS PRODUCTS Attachment Firearms Art |
| 1921 GARRISON Safety Device For Firearms Patent |
| 1921 BUTLER Detachable Stock For Firearms Patent |
| 1921 MARLIN FIREARMS CORP Equalizer Patent Print |
| 1921 JOHNSTON Dustproof Firearms Art Print |
| 1921 POST Attachment For Firearms Patent Print |
| 1921 CRAIG Accuracy Attachment Firearms Art |
| 1921 NEWTON D BAKER Bipod Rest Firearms Art |