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Application filed by Grun Peter, Ladislav Ing Herdicky, Ladislav Ing SedlakfiledCriticalGrun Peter
Priority to CS869947ApriorityCriticalpatent/CS258642B1/en
Publication of CS994786A1publicationCriticalpatent/CS994786A1/en
Publication of CS258642B1publicationCriticalpatent/CS258642B1/en