| 1921 GEN MOTORS CORP Car Loading System Patent |
| 1921 SAVAGE ARMS CORP Cartridge Magazine Patent |
| 1921 PERKINS CORP Stock Watering Tank Patent |
| 1921 COWMATIC CORP Cow Stall Patent Print Art |
| 1921 ALBANY BOAT CORP Speed Boat Patent Print |
| 1921 ISGRIG WALTER Clamp BADGER MFG CORP Patent |
| 1921 BADGER MFG CORP Automobile Bumper Patent |
| 1921 SAVAGE ARMS CORP Firearm Patent Print Art |
| 1921 GEN MOTORS CORP Motor Car Bumper Patent |
| 1921 AUTO ORDNANCE CORP Gun Patent Print Art |
| 1921 BETHLEHEM STEEL CORP Percussion Fuse Patent |
| 1921 GEN AMERICAN TANK CAR CORP Tank Car Patent |
| 1921 SAVAGE ARMS CORP Magazine Loader Patent |
| 1921 BOTTS LEWIS Cow Stall COWMATIC CORP Patent |
| 1921 GEN MOTORS CORP Transmission Lock Patent |
| 1921 SMITH SIGNAL CORP Three Way Switch Patent |
| 1921 PAYNE OSCAR Gun AUTO ORDNANCE CORP Patent |
| 1921 THOMAS MORSE AIRCRAFT CORP Airplane Patent |
| 1921 GRAHAM OLIVER Gun AUTO ORDNANCE CORP Patent |
| 1921 CLARK PEDMOBILE CORP Skate Patent Print Art |
| 1921 MARLIN FIREARMS CORP Equalizer Patent Print |
| 1921 AUTO ORDNANCE CORP Automatic Gun Patent |
| 1921 PURITON MFG CORP Signal Patent Print Art |
| 1921 BADGER MFG CORP Clamp Patent Print Art |
| 1921 AUTO ORDNANCE CORP Gun Sight Patent Print |
| 1921 SIMPLEX CORP Steering Wheel Lock Patent |