| 1931 FAULTLESS MFG COMPANY Union Undergarment |
| 1931 HANDLAN BUCK MFG COMPANY Lamp Patent Print |
| 1931 DONALDSON MFG COMPANY LTD Golf Club Patent |
| 1931 SEYMOUR MFG COMPANY INC Coaster Sled Patent |
| 1931 LEEDY MFG COMPANY Musical Element Patent |
| 1931 HANDLAN BUCK MFG COMPANY Lamp Housing Art |
| 1931 ROTERKLEEN MFG COMPANY Cleaning Machine Art |
| 1931 NESTOR JOHNSON MFG COMPANY Ice Skate Patent |
| 1931 FAUTLESS MFG COMPANY Undergarment Patent |
| 1931 MECHANICAL MFG COMPANY Bumping Post Patent |
| 1931 FORSTER MFG COMPANY Gas Cannon Patent Print |
| 1931 RAWLINGS MFG COMPANY Athletic Guard Patent |
| 1931 BUCKEYE INCUBATOR MFG COMPANY Brooder |
| 1931 KING MFG COMPANY Popgun Patent Print Art |
| 1931 LEEDY MFG COMPANY Snare Drum Patent Print |
| 1931 PERFECTION MFG COMPANY Baby Carriage Patent |
| 1931 JEFFERY MFG COMPANY Gear Guard Patent Print |
| 1931 RAWLINGS MFG COMPANY Baseball Glove Patent |
| 1931 WILDER MFG COMPANY Toy Airplane Patent |
| 1931 LEEDY MFG COMPANY Drum Pedal Patent Print |