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Application filed by Frycek Vaclav, Miloslav OcasekfiledCriticalFrycek Vaclav
Priority to CS878576ApriorityCriticalpatent/CS264392B1/en
Publication of CS857687A1publicationCriticalpatent/CS857687A1/en
Publication of CS264392B1publicationCriticalpatent/CS264392B1/en