Patent:GB601427
Brevetto: | GB 601427 |
Titolo: | Improvements in or relating to Calculating Machines |
Data: | 05.05.1948 |
Luogo: | Chicago, USA |
Nazione: | Gran Bretagna |
Persona: | |
Ditta: | Felt und Tarrant (P) |
Link interni: | Comptometer |
Keywords: | |
Link al brevetto: (without guarantee) | GB601427 |