Patent:US3147919
Patent: | US 3147919 |
Titel: | Ten-Key Keyboard for Calculating and Bookkeeping Machines |
Datum: | 08.09.1964 |
Ort: | |
Land: | USA |
Person: | Gelling, Helmut (P) |
Firma: | Precisa (P) |
Links im Rechnerlexikon: | |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | US3147919 (espacenet), US3147919 (uspto) |
- DATUM: 08.09.1964
- TITEL: Ten-key keyboard for calculating and bookkeeping machines
- PERSON: PRECISA A G