Patent:US1794514
Brevetto: | US 1794514 |
Titolo: | Driving mechanism for calculating machines |
Data: | 03.03.1931 |
Luogo: | |
Nazione: | Stati Uniti |
Persona: | Chase, George Clinton (P) |
Ditta: | Monroe (P) |
Link interni: | |
Keywords: | |
Link al brevetto: (without guarantee) | ![]() ![]() |
- ok