Patent:GB162259
Brevetto: | GB 162259 |
Titolo: | Improvements in motor driven calculating machines |
Data: | 07.03.1922 |
Luogo: | |
Nazione: | Gran Bretagna |
Persona: | |
Ditta: | Fed Adding Machine Corp |
Link interni: | |
Keywords: | |
Link al brevetto: (without guarantee) | ![]() |
- DATUM: 07.03.1922
- TITEL: Improvements in motor driven calculating machines
- PERSON: FED ADDING MACHINE CORP