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Application filed by Karel Ing Csc Hanza, Josef Ing LeitmannfiledCriticalKarel Ing Csc Hanza
Priority to CS841983ApriorityCriticalpatent/CS238693B1/en
Publication of CS198384A1publicationCriticalpatent/CS198384A1/en
Publication of CS238693B1publicationCriticalpatent/CS238693B1/en