Patented September 8, 1914
| Patent | Title | Inventor |
|---|---|---|
| US 1,110,186 | ELECTRIC RAT-EXTERMINATOR | James W. M. Carmichael |
| US 1,110,006 | RAT-TRAP. | Albert R. Peterson |
And The World Did Not Beat A Path To His Door
4,400 attempts at a solved problem
| Patent | Title | Inventor |
|---|---|---|
| US 1,110,186 | ELECTRIC RAT-EXTERMINATOR | James W. M. Carmichael |
| US 1,110,006 | RAT-TRAP. | Albert R. Peterson |