Padlock Patent — Combination
Inventor: Curran, Russell E.
View on USPTO / Google Patents ↗Classification: 70/299
| Patent Number | 2173680 |
|---|---|
| Issue Date | September 19, 1939 |
| Inventor | Curran, Russell E. |
| Patent Type | Combination |
| External Link | https://patents.google.com/patent/US2173680 ↗ |
