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Application filed by Bohumil Ing Gancarcik, Leopold Ing BednarikfiledCriticalBohumil Ing Gancarcik
Priority to CS823039ApriorityCriticalpatent/CS231362B1/en
Publication of CS303982A1publicationCriticalpatent/CS303982A1/en
Publication of CS231362B1publicationCriticalpatent/CS231362B1/en