Padlock Patent — Pin Tumbler
Inventor: McDonald, John K.
View on USPTO / Google Patents ↗Classification: 00/00
| Patent Number | 1385461 |
|---|---|
| Issue Date | July 26, 1921 |
| Inventor | McDonald, John K. |
| Assigned To | Theft Warning Auto Lock Co. |
| Patent Type | Pin Tumbler |
| External Link | https://patents.google.com/patent/US1385461 ↗ |