Patented November 20, 1877
If an object in your hands says PAT. NOVEMBER 20, 1877, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 197,253 | IMPROVEMENT IN WRENCHES | Calvin H. Covell | Stockton, California |
The Antique Wrench Patent Archive
Every grip the nineteenth century took on a nut
If an object in your hands says PAT. NOVEMBER 20, 1877, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 197,253 | IMPROVEMENT IN WRENCHES | Calvin H. Covell | Stockton, California |