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Application filed by Krnavek Frantisek, Jaroslav SuchyfiledCriticalKrnavek Frantisek
Priority to CS875588ApriorityCriticalpatent/CS273398B1/cs
Publication of CS875588A1publicationCriticalpatent/CS875588A1/cs
Publication of CS273398B1publicationCriticalpatent/CS273398B1/cs