Padlock Patent — Keyed
Inventor: Daniel Victor Berry
View on USPTO / Google Patents ↗| Patent Number | 3638460 |
|---|---|
| Issue Date | 1971-01-05 |
| Inventor | Daniel Victor Berry |
| Assigned To | Ingersoll Locks Ltd |
| Patent Type | Keyed |
| External Link | https://patents.google.com/patent/US3638460/en ↗ |