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Application filed by Siegfried Popel, Dieter Neumann, Christian KlossfiledCriticalSiegfried Popel
Priority to DD19826777ApriorityCriticalpatent/DD130650B1/en
Publication of DD130650A1publicationCriticalpatent/DD130650A1/en
Publication of DD130650B1publicationCriticalpatent/DD130650B1/en