Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from AT192651Dexternal-prioritypatent/AT192651B/de
Application filed by Firma Carl ZeissfiledCriticalFirma Carl Zeiss
Application grantedgrantedCritical
Publication of AT197095BpublicationCriticalpatent/AT197095B/de
