Patented March 20, 1877
If an object in your hands says PAT. MARCH 20, 1877, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 188,718 | IMPROVEMENT IN LEVER-CLAMPS | Van Court Yantis | Rolla, Missouri |
The Antique Wrench Patent Archive
Every grip the nineteenth century took on a nut
If an object in your hands says PAT. MARCH 20, 1877, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 188,718 | IMPROVEMENT IN LEVER-CLAMPS | Van Court Yantis | Rolla, Missouri |