Patent:US1834561
Patent: | US 1834561 |
Titel: | Accounting Machine and Punching Mechanism Controlled thereby |
Datum: | 01.12.1931 |
Ort: | |
Land: | USA |
Person: | T. J. Watson |
Firma: | |
Links im Rechnerlexikon: | |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | US1834561 (espacenet), US1834561 (uspto) |
- DATUM: 01.12.1931
- TITEL: Accounting machine and punching mechanism controlled thereby
- PERSON: TABULATING MACHINE CO
- Patent Family: ( Patent:DE447217, Patent:FR613007, Patent:GB250258, Patent:US1834561 )