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Patent:US3495771
| Patent: | US 3495771 |
| Titel: | Devices in Adding Machines Having a Multiplying Mechanism for Converting a Total-Taking Operation Into a SubTotal-Taking Operation |
| Datum: | 17.02.1970 |
| Ort: | |
| Land: | USA |
| Person: | Lydfors, John (P) |
| Firma: | Addo (P) |
| Links im Rechnerlexikon: | |
| Schlagworte: | |
| Link zum Patentamt: (ohne Garantie) |  US3495771 (espacenet), US3495771 (uspto) |
Aus der Patentschrift US3495771
- DATUM: 17.02.1970
- TITEL: DEVICES IN ADDING MACHINES HAVING A MULTIPLYING MECHANISM FOR CONVERTING A TOTAL-TAKING OPERATION INTO A SUBTOTAL-TAKING OPERATION
- PERSON: ADDO AB
- Patent Family: ( Patent:DE1807028, Patent:SE336689, Patent:US3495771 )