| 1920 GOLDSMITH DANIEL Poultry Nest Patent Print |
| 1920 SPEICHER Poultry Housing Device Patent |
| 1920 BROWN EDWIN Poultry Feed Hopper Patent |
| 1920 GEORGE Poultry Feeding Appliance Patent |
| 1920 DICK DE YOUNG Poultry Fumigator Patent |
| 1920 ANDREW M EVANS Poultry Roost Patent Print |
| 1920 BETTENGA CRENO Poultry Waterer Patent Print |
| 1920 ZOTHIQUE CHOINIERE Poultry Feeder Patent |
| 1920 ANDREW WOUDEMA Poultry Fumigator Patent |
| 1920 WARRINGTON JOHN Poultry Roost Patent Print |
| 1920 ASHLEY FREELAND Poultry Feeder Patent Print |
| 1920 SUNDRE Automatic Poultry Sprayer Patent |
| 1920 JACOBUS MARTIN Poultry Feeder Patent Print |
| 1920 SULLIVAN Leg Band For Poultry Patent Print |
| 1920 ELLA Heater For Poultry Houses Patent Print |
| 1920 UNITED STEEL & WIRE CO Poultry Crate Patent |
| 1920 GRAHAM Feeding Device For Poultry Patent |
| 1920 EATON Feeding Device For Poultry Patent |
| 1920 GENEBACH GEORGE Poultry Crate Patent Print |
| 1920 JOHNSON Material For Poultry Nests Patent |
| 1920 HENRY WINDAHL Poultry Roost Patent Print |