AT127084B -
Device for determining the light transmission of photographic negatives for determining the exposure time of enlargements or contact copies.
- Google Patents
Device for determining the light transmission of photographic negatives for determining the exposure time of enlargements or contact copies.
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Publication number
AT127084B
AT127084BAT127084DAAT127084BAT 127084 BAT127084 BAT 127084BAT 127084D AAT127084D AAT 127084DAAT 127084 BAT127084 BAT 127084B
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Publication date
Application filed by Franz KuenzelfiledCriticalFranz Kuenzel
Application grantedgrantedCritical
Publication of AT127084BpublicationCriticalpatent/AT127084B/en
AT127084D1930-06-241930-06-24
Device for determining the light transmission of photographic negatives for determining the exposure time of enlargements or contact copies.
AT127084B
(en)