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Application filed by Otakar Kristoufek, Micek Petr, Semecky Jiri, Vladimir Ing SubrtfiledCriticalOtakar Kristoufek
Priority to CS862374ApriorityCriticalpatent/CS254895B1/en
Publication of CS237486A1publicationCriticalpatent/CS237486A1/en
Publication of CS254895B1publicationCriticalpatent/CS254895B1/en