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Application filed by Milan Popelka, Karel Ing Csc David, Mirko PopelkafiledCriticalMilan Popelka
Priority to CS881786ApriorityCriticalpatent/CS269231B1/cs
Publication of CS178688A1publicationCriticalpatent/CS178688A1/cs
Publication of CS269231B1publicationCriticalpatent/CS269231B1/cs