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Application filed by Ivo Ing Bures, Emil Ing Rissler, Zizka JanfiledCriticalIvo Ing Bures
Priority to CS854264ApriorityCriticalpatent/CS255824B1/en
Publication of CS426485A1publicationCriticalpatent/CS426485A1/en
Publication of CS255824B1publicationCriticalpatent/CS255824B1/en