Patented February 27, 1951
| Patent | Title | Inventor |
|---|---|---|
| US 2,543,645 | TRAP FOR ANIMALS | Frank Edmund Sawyer |
And The World Did Not Beat A Path To His Door
4,400 attempts at a solved problem
| Patent | Title | Inventor |
|---|---|---|
| US 2,543,645 | TRAP FOR ANIMALS | Frank Edmund Sawyer |