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Priority claimed from DE8813858Uexternal-prioritypatent/DE8813858U1/de
Priority claimed from DE8908700Uexternal-prioritypatent/DE8908700U1/de
Application filed by Wiebe Hermann GrundstueckfiledCriticalWiebe Hermann Grundstueck
Application grantedgrantedCritical
Publication of ATE87047T1publicationCriticalpatent/ATE87047T1/de