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Application filed by Oldrich Ing Sinkora, Bohuslav PechfiledCriticalOldrich Ing Sinkora
Priority to CS87694ApriorityCriticalpatent/CS259933B1/en
Publication of CS69487A1publicationCriticalpatent/CS69487A1/en
Publication of CS259933B1publicationCriticalpatent/CS259933B1/en