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Application filed by Bronislav Ing Ondraszek, Rudolf Nemcik, Zbygnev Ing PiegzafiledCriticalBronislav Ing Ondraszek
Priority to CS876987ApriorityCriticalpatent/CS263096B1/en
Publication of CS698787A1publicationCriticalpatent/CS698787A1/en
Publication of CS263096B1publicationCriticalpatent/CS263096B1/en