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Application filed by Poor Robert, Ferdinand Dipl Tech Vavrinec, Jan Maczek, Jan MravecfiledCriticalPoor Robert
Priority to CS863798ApriorityCriticalpatent/CS255380B1/en
Publication of CS379886A1publicationCriticalpatent/CS379886A1/en
Publication of CS255380B1publicationCriticalpatent/CS255380B1/en