Padlock Patent — Keyed
Inventor: Theodore H Johnstone
View on USPTO / Google Patents ↗| Patent Number | 2182809 |
|---|---|
| Issue Date | 1936-04-29 |
| Inventor | Theodore H Johnstone |
| Assigned To | Yale and Towne Manufacturing Co |
| Patent Type | Keyed |
| External Link | https://patents.google.com/patent/US2182809/en ↗ |
