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Application filed by Rudolf Ing Huna, Roman Ing Ponevac, Petr Ing OgrockifiledCriticalRudolf Ing Huna
Priority to CS845093ApriorityCriticalpatent/CS252358B1/en
Publication of CS509384A1publicationCriticalpatent/CS509384A1/en
Publication of CS252358B1publicationCriticalpatent/CS252358B1/en