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Application filed by Pavol Ing Urban, Vincent Ing Mihalik, Dusan Ing Guzi, Pavol Ing SegedyfiledCriticalPavol Ing Urban
Priority to CS876939ApriorityCriticalpatent/CZ280907B6/cs
Publication of CS693987A3publicationCriticalpatent/CS693987A3/cs
Publication of CZ280907B6publicationCriticalpatent/CZ280907B6/cs