Padlock Patent — Keyed
Inventor: George P. Patriquin
View on USPTO / Google Patents ↗| Patent Number | 3973421 |
|---|---|
| Issue Date | 1975-04-07 |
| Inventor | George P. Patriquin |
| Assigned To | HUDSON LOCK Inc |
| Patent Type | Keyed |
| External Link | https://patents.google.com/patent/US3973421/en ↗ |