Patent:US1690487
Patent: | US 1690487 |
Titel: | Attachment for calculating machines |
Datum: | 06.11.1928 |
Ort: | |
Land: | USA |
Person: | Horton, Allen (P) |
Firma: | Burroughs (P) |
Links im Rechnerlexikon: | |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | US1690487 (espacenet), US1690487 (uspto) |
- DATUM: 06.11.1928
- TITEL: Attachment for calculating machines
- PERSON: BURROUGHS ADDING MACHINE CO
- Patent Family: ( Patent:DE490846, Patent:GB263097, Patent:US1690487 )