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Application filed by Josef Ing Tomsu, Bohumil Ing VancurafiledCriticalJosef Ing Tomsu
Priority to CS82859ApriorityCriticalpatent/CS232420B1/en
Publication of CS85982A1publicationCriticalpatent/CS85982A1/en
Publication of CS232420B1publicationCriticalpatent/CS232420B1/en