Patented May 22, 1877
If an object in your hands says PAT. MAY 22, 1877, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 191,123 | IMPROVEMENT IN KEY-HOLE GUARDS | Christian Eisele | Philadelphia, Pennsylvania |
Three centuries of keeping things shut
If an object in your hands says PAT. MAY 22, 1877, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 191,123 | IMPROVEMENT IN KEY-HOLE GUARDS | Christian Eisele | Philadelphia, Pennsylvania |