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Publication date
Application filed by Zdenek Ing Bogdan, Jaroslav Ing FaltysfiledCriticalZdenek Ing Bogdan
Priority to CS872584ApriorityCriticalpatent/CS259644B1/en
Publication of CS258487A1publicationCriticalpatent/CS258487A1/en
Publication of CS259644B1publicationCriticalpatent/CS259644B1/en