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Application filed by Karel Ing Walter, Jindrich Ing Nosek, Frantisek Ing Csc VeinfurtfiledCriticalKarel Ing Walter
Priority to CS863535ApriorityCriticalpatent/CS257011B1/en
Publication of CS353586A1publicationCriticalpatent/CS353586A1/en
Publication of CS257011B1publicationCriticalpatent/CS257011B1/en