Patent:US2721032
Patent: | US 2721032 |
Titel: | Calculating Devices for calculating photographic exposure data |
Datum: | 18.10.1955 |
Ort: | |
Land: | USA |
Person: | Charles Gresham Donald |
Firma: | McCorquodale and Company Ltd |
Links im Rechnerlexikon: | |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | US2721032 (espacenet), US2721032 (uspto) |
- DATUM: 18.10.1955
- TITEL: Calculating devices for calculating photographic exposure data
- PERSON: MCCORQUODALE COMPANY LTD