Patented December 18, 1973
| Patent | Title | Inventor |
|---|---|---|
| US 3,778,922 | BIRDHOUSE SPARROW TRAP | James Webster Clark |
And The World Did Not Beat A Path To His Door
4,400 attempts at a solved problem
| Patent | Title | Inventor |
|---|---|---|
| US 3,778,922 | BIRDHOUSE SPARROW TRAP | James Webster Clark |