Patent:GB156311
Brevetto: | GB 156311 |
Titolo: | Improvements in and relating to calculating machines |
Data: | 29.12.1920 |
Luogo: | |
Nazione: | Gran Bretagna |
Persona: | Frank Edward Guy |
Ditta: | |
Link interni: | Britannic |
Keywords: | |
Link al brevetto: (without guarantee) | ![]() |
- DATUM: 29.12.1920
- TITEL: Improvements in and relating to calculating machines
- PERSON: FRANK EDWARD GUY