Patented May 7, 1878
If an object in your hands says PAT. MAY 7, 1878, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 203,261 | IMPROVEMENT IN PIPE-WRENCHES | Lawrence Glynn | Cambridgeport, Massachusetts |
| US 203,262 | IMPROVEMENT IN WRENCHES | Gurdon S. Goodspeed | Providence, Rhode Island |