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Application filed by Pavel Sladek, Bretislav Ing Tempir, Vilem Ing Letocha, Jaroslav Ing HanakfiledCriticalPavel Sladek
Priority to CS872452ApriorityCriticalpatent/CS259699B1/en
Publication of CS245287A1publicationCriticalpatent/CS245287A1/en
Publication of CS259699B1publicationCriticalpatent/CS259699B1/en