Patent:US1935609
Patent: | US 1935609 |
Titel: | Total key unlocking means for adding machines |
Datum: | 21.11.1933 |
Ort: | |
Land: | USA |
Person: | Barrett, Glenn (P) |
Firma: | Portable Adding Machine Compan |
Links im Rechnerlexikon: | |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | US1935609 (espacenet), US1935609 (uspto) |
- DATUM: 21.11.1933
- TITEL: Total key unlocking means for adding machines
- PERSON: PORTABLE ADDING MACHINE COMPAN