Padlock Patent — Combo
Inventor: Marshall James Keith
View on USPTO / Google Patents ↗| Patent Number | 2173720 |
|---|---|
| Issue Date | 1939-04-24 |
| Inventor | Marshall James Keith |
| Assigned To | Master Lock Co LLC |
| Patent Type | Combo |
| External Link | https://patents.google.com/patent/US2173720/en ↗ |
