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Publication date
Application filed by Joachim Ehrich, Horst Pusch, Volker Schneeweiss, Heinz WickefiledCriticalJoachim Ehrich
Priority to DD23420481ApriorityCriticalpatent/DD207069A3/en
Priority to DE19823209432prioritypatent/DE3209432A1/en
Priority to CS412682Aprioritypatent/CS239340B1/en
Publication of DD207069A3publicationCriticalpatent/DD207069A3/en