Patent:GB800462
Patent: | GB 800462 |
Titel: | Improved calculating device for use in connection with photographic enlargement and reduction |
Datum: | 27.08.1958 |
Ort: | |
Land: | Großbritannien |
Person: | Reginald Ernest Guppy |
Firma: | |
Links im Rechnerlexikon: | |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | GB800462 |
- DATUM: 27.08.1958
- TITEL: Improved calculating device for use in connection with photographic enlargement and reduction
- PERSON: REGINALD ERNEST GUPPY