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Pagina principale
Patent:GB694698
| Brevetto: | GB 694698 |
| Titolo: | Improvements in or relating to a ten-key mechanism for an adding machine |
| Data: | 22.07.1953 |
| Luogo: | |
| Nazione: | Gran Bretagna |
| Persona: | |
| Ditta: | IBM (P) |
| Link interni: | |
| Keywords: | |
| Link al brevetto: (without guarantee) |  GB694698 |
Aus der Patentschrift GB694698
- DATUM: 22.07.1953
- TITEL: Improvements in or relating to a ten-key mechanism for an adding machine