| 1939 SPENGLER WALTER Multiple Switch Patent |
| 1939 LIPCHOW WALTER Baseball Game Patent Print |
| 1939 WALTER Live Bait Container Patent Print Art |
| 1939 WALTER HOUSEKNECHT Game Board Patent Print |
| 1939 NIEMEYER WALTER Poultry Roost Patent Print |
| 1939 COPELAND WALTER Collapsible Case Patent |
| 1939 LEIBENGUTH WALTER Hen'S Nest Patent Print |
| 1939 WALTER SCHAELCHLIN Ship Propulsion Patent |
| 1939 SCOTT WALTER Educational Game Patent Print |
| 1939 WALTER Educational Game Apparatus Patent |
| 1939 WALTER BOLD Mechanical Toy Patent Print Art |
| 1939 WALTER EBERHARDT Sled Patent Print Art |
| 1939 BOWMAN WALTER Trap Patent Print Art |
| 1939 MARR WALTER Fishing Reel Patent Print Art |
| 1939 REYNOLDS WALTER Hog Feeder Patent Print Art |
| 1939 KELLEY WALTER Hive Frame Patent Print Art |
| 1939 WALTER WILFRID Vehicle Bumper Patent Print |
| 1939 BASELT WALTER Brake Arrangement Patent |
| 1939 PRICE WALTER Game Device Patent Print Art |
| 1939 WALTER Finishing Seam And Method Patent |
| 1939 ADAMS WALTER Fishing Reel Patent Print Art |
| 1939 YOUNGBERG WALTER Game Patent Print Art |
| 1939 POWELL WALTER Undergarment Patent Print Art |
| 1939 HEATH WALTER Animal Trap Patent Print Art |
| 1939 NILSSON WALTER Water Unicycle Patent Print |
| 1939 WALTER ELISE Vehicle Bumper Patent Print |