Padlock Patent — Combination
Inventor: Quaintance, Elsworth E.
View on USPTO / Google Patents ↗Some padlocks are marked with this original mechanism patent. This padlock was manufactured by Permutation Lock Co. | Classification: 70/312
| Patent Number | 817388 |
|---|---|
| Issue Date | April 10, 1906 |
| Inventor | Quaintance, Elsworth E. |
| Patent Type | Combination |
| External Link | https://patents.google.com/patent/US817388 ↗ |
