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Priority claimed from DEV18926Aexternal-prioritypatent/DE1149018B/de
Priority claimed from DEV19376Aexternal-prioritypatent/DE1156087B/de
Application filed by Heinrich VorkauffiledCriticalHeinrich Vorkauf
Application grantedgrantedCritical
Publication of FI43192BpublicationCriticalpatent/FI43192B/fi
