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Application filed by Vanecek Vaclav, Kozisek Bohuslav, Holasek Oldrich, Josef MatejicekfiledCriticalVanecek Vaclav
Priority to CS867047ApriorityCriticalpatent/CS255635B1/en
Publication of CS704786A1publicationCriticalpatent/CS704786A1/en
Publication of CS255635B1publicationCriticalpatent/CS255635B1/en