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Priority claimed from DEH36996Aexternal-prioritypatent/DE1229402B/de
Priority claimed from DEH33741Uexternal-prioritypatent/DE1806723U/de
Application filed by Happich Gmbh GebrfiledCriticalHappich Gmbh Gebr
Application grantedgrantedCritical
Publication of DK105508CpublicationCriticalpatent/DK105508C/da