Padlock Patent — Lever
Inventor: Martens, August Friedrich
View on USPTO / Google Patents ↗Classification: 70/19
| Patent Number | 294058 |
|---|---|
| Issue Date | February 26, 1884 |
| Inventor | Martens, August Friedrich |
| Patent Type | Lever |
| External Link | https://patents.google.com/patent/US294058 ↗ |
