| 1920 BARRY WALTER Educational Toy Patent Print |
| 1920 BARLING WALTER Fuselage Patent Print Art |
| 1920 DAVIS WALTER Rudder Patent Print Art |
| 1920 INGLIS WALTER Cartridge Box Patent Print |
| 1920 HIGLEY WALTER Aeroplane Patent Print Art |
| 1920 MCMILLEN WALTER Watch Holder Patent Print |
| 1920 BRADLEY WALTER Bowling Alley Patent Print |
| 1920 WALTER CHRISTIE Tractor Patent Print Art |
| 1920 WALTER LENCHARD Toy Doll Patent Print Art |
| 1920 CAMPBELL WALTER Tire Lock Patent Print Art |
| 1920 BROWN WALTER Tubular Ice Skate Patent Print |
| 1920 MAY WALTER Life Preserver Patent Print Art |
| 1920 WALTER SCHUTTE Sled Patent Print Art |
| 1920 GLIDDEN WALTER Sewing Machine Patent Print |
| 1920 KIRK WALTER Tuning Fork Patent Print Art |
| 1920 KERN WALTER Dump Body Hoist Patent Print |
| 1920 WALTER LENCHARD Toy Pin Board Patent Print |
| 1920 WALTER P MURPHY Railway Car Patent Print |
| 1920 MORAN WALTER Automobile Alarm Patent Print |
| 1920 INSKO WALTER Brooder Patent Print Art |
| 1920 GIBBS WALTER Trap Patent Print Art |
| 1920 WALTER RALPH Cow Stanchion Patent Print Art |
| 1920 DOVE WALTER Artillery Truck Patent Print |
| 1920 HUTH WALTER Toy Fichting Tank Patent Print |
| 1920 WEST WALTER Animal Trap Patent Print Art |
| 1920 BARGER WALTER Calf Weaner Patent Print Art |
| 1920 WALTER Toy Shcoting Gallery Patent Print |
| 1920 WHITE WALTER Toy Patent Print Art |