Patented May 31, 1921
If an object in your hands says PAT. MAY 31, 1921, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 1,380,053 | PADLOCK | Samuel R. Fraim | Lancaster, Pennsylvania |
Three centuries of keeping things shut
If an object in your hands says PAT. MAY 31, 1921, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 1,380,053 | PADLOCK | Samuel R. Fraim | Lancaster, Pennsylvania |