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Priority claimed from HU355887Aexternal-prioritypatent/HU198646B/en
Application filed by Beton Es Vasbetonipari MuevekfiledCriticalBeton Es Vasbetonipari Muevek
Publication of CS541188A3publicationCriticalpatent/CS541188A3/en
Publication of CZ277747B6publicationCriticalpatent/CZ277747B6/en