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Application filed by Bohumil Pesina, Prihoda Karel, Jiri Ing SandafiledCriticalBohumil Pesina
Priority to CS849482ApriorityCriticalpatent/CS242039B1/en
Publication of CS948284A1publicationCriticalpatent/CS948284A1/en
Publication of CS242039B1publicationCriticalpatent/CS242039B1/en