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Application filed by Mainer Petr, Josef Ing Fiala, Jiri Popek, Jan VadinskyfiledCriticalMainer Petr
Priority to CS847460ApriorityCriticalpatent/CS243121B1/en
Publication of CS746084A1publicationCriticalpatent/CS746084A1/en
Publication of CS243121B1publicationCriticalpatent/CS243121B1/en