Patented April 16, 1878
If an object in your hands says PAT. APRIL 16, 1878, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 202,344 | Adjustable Watch-Key. | William Haines | Philadelphia, Pennsylvania |
The Antique Wrench Patent Archive
Every grip the nineteenth century took on a nut
If an object in your hands says PAT. APRIL 16, 1878, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 202,344 | Adjustable Watch-Key. | William Haines | Philadelphia, Pennsylvania |