| 1921 GEN MOTORS CORP Car Loading System Patent |
| 1921 WIRE WHEEL CORP AMERICA Portable Wheel Rack |
| 1921 SAVAGE ARMS CORP Cartridge Magazine Patent |
| 1921 PERKINS CORP Stock Watering Tank Patent |
| 1921 COWMATIC CORP Cow Stall Patent Print Art |
| 1921 AMERICAN BALSA CORP Dirigible Airship Art |
| 1921 ALBANY BOAT CORP Speed Boat Patent Print |
| 1921 UNITED SHOE MACHINERY CORP Shoe Sewing Machine |
| 1921 STEWARD DAVIT EQUIPMENT CORP Hoisting Mechanism |
| 1921 ISGRIG WALTER Clamp BADGER MFG CORP Patent |
| 1921 UNITED SHOE MACHINERY CORP Thread Gripping |
| 1921 BADGER MFG CORP Automobile Bumper Patent |
| 1921 SONORA PHONOGRAPH CORP Talking Machine Art |
| 1921 SAVAGE ARMS CORP Firearm Patent Print Art |
| 1921 SALIGER SHIP SALVAGE CORP Burrowing Machine |
| 1921 SALIGER SHIP SALVAGE CORP Resilient Pontoon |
| 1921 AUTO ORDNANCE CORP Double Barreled Gun Art |
| 1921 GEN MOTORS CORP Motor Car Bumper Patent |
| 1921 AUTO ORDNANCE CORP Gun Patent Print Art |
| 1921 STEWARTWARNER SPEEDOMETER CORP Automobile Bumper |
| 1921 MARLIN FIREARMS CORP Repeating Firearm Art |
| 1921 SONORA PHONOGRAPH CORP Talking Machine Horn |
| 1921 MCLAREN SLEIGHT CORP Convertible Vehicle |
| 1921 STEWARD DAVIT EQUIPMENT CORP Ship'S Davit |
| 1921 BETHLEHEM STEEL CORP Percussion Fuse Patent |
| 1921 WEAVER ROBERT Tank Car GEN AMERICAN TANK CAR CORP |
| 1921 GEN AMERICAN TANK CAR CORP Tank Car Patent |
| 1921 SAVAGE ARMS CORP Magazine Loader Patent |
| 1921 OCEANIC SALVAGE CORP Flexible Joint Diving Armor |
| 1921 ATALANTA ENGINEERING CORP Diving Suit |
| 1921 SAVAGE ARMS CORP Gas Operated Firearm Art |
| 1921 UNITED SHOE MACHINERY CORP Stitched Buttonhole |
| 1921 BOTTS LEWIS Cow Stall COWMATIC CORP Patent |
| 1921 UNITED SHOE MACHINERY CORP Sewing Machine |
| 1921 GEN MOTORS CORP Transmission Lock Patent |
| 1921 SMITH SIGNAL CORP Three Way Switch Patent |
| 1921 NECEDAH CORP Motor Propeller Boats Art |
| 1921 PAYNE OSCAR Gun AUTO ORDNANCE CORP Patent |
| 1921 THOMAS MORSE AIRCRAFT CORP Airplane Patent |
| 1921 GRAHAM OLIVER Gun AUTO ORDNANCE CORP Patent |
| 1921 SCHWARZE ELECTRIC WILLYS CORP Horn Art |
| 1921 SMITH CORP A O Corrugated Metal End Railway Cars |
| 1921 CLARK PEDMOBILE CORP Skate Patent Print Art |
| 1921 AUTO ORDNANCE CORP Magazine Construction |
| 1921 MARLIN FIREARMS CORP Equalizer Patent Print |
| 1921 PAYNE OSCAR Gun Sight AUTO ORDNANCE CORP |
| 1921 UNITED SHOE MACHINERY CORP Button Sewing Machine |
| 1921 HASKELL CLARK Skate CLARK PEDMOBILE CORP |
| 1921 ORDNANCE ENGINEERING CORP Illuminating Body |
| 1921 AUTO ORDNANCE CORP Automatic Gun Patent |
| 1921 ORDNANCE ENGINEERING CORP Trench Mortar Art |
| 1921 UNITED SHOE MACHINERY CORP Thread Waxing |
| 1921 STOEHRER PRATT DODGEN CORP Amusement Art |
| 1921 PURITON MFG CORP Signal Patent Print Art |
| 1921 AUTO ORDNANCE CORP Ammunition Lubrication |
| 1921 UNITED SHOE MACHINERY CORP Inseam Sewing Machine |
| 1921 Niagara Falls NY Metal Stamping Corp. Ad & Article |
| 1921 BADGER MFG CORP Clamp Patent Print Art |
| 1921 MARSICO GERARD Signal PURITON MFG CORP Art |
| 1921 AUTO ORDNANCE CORP Gun Sight Patent Print |
| 1921 SIMPLEX CORP Steering Wheel Lock Patent |
| Ladd Egg beater- 1921 New York united royalties corp. |