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Application filed by Frantisek Matejovsky, Jaroslav Ing MlcochfiledCriticalFrantisek Matejovsky
Priority to CS872326ApriorityCriticalpatent/CS261936B1/en
Publication of CS232687A1publicationCriticalpatent/CS232687A1/en
Publication of CS261936B1publicationCriticalpatent/CS261936B1/en