Padlock Patent — Push Key
Inventor: Trimble, Charles B.
View on USPTO / Google Patents ↗Classification: 70/59
| Patent Number | 51524 |
|---|---|
| Issue Date | December 12, 1865 |
| Inventor | Trimble, Charles B. |
| Assigned To | Allen, Charles T. |
| Patent Type | Push Key |
| External Link | https://patents.google.com/patent/US51524 ↗ |