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CYCLOPTIC ANSTALT FU R OPTIK U
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CYCLOPTIC ANSTALT FU R OPTIK U
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Application filed by CYCLOPTIC ANSTALT FU R OPTIK UfiledCriticalCYCLOPTIC ANSTALT FU R OPTIK U
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Publication of FR995157ApublicationCriticalpatent/FR995157A/en
Fast, spherical, chromatic and four-lens photographic lens of the extended triplet type corrected for astigmatism, field curvature, coma and distortion