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Priority claimed from DEK40498Aexternal-prioritypatent/DE1219659B/de
Priority claimed from DEK37720Uexternal-prioritypatent/DE1836744U/de
Priority claimed from DEK37719Uexternal-prioritypatent/DE1836742U/de
Priority claimed from DEK43263Aexternal-prioritypatent/DE1137853B/de
Application filed by Kuper HeinrichfiledCriticalKuper Heinrich
Publication of BE602860ApublicationCriticalpatent/BE602860A/fr
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