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Priority claimed from EP00102081Aexternal-prioritypatent/EP1061176B1/en
Application filed by Hochtief Ag Hoch TiefbautenfiledCriticalHochtief Ag Hoch Tiefbauten
Publication of PL340618A1publicationCriticalpatent/PL340618A1/en
Method of and apparatus maintaining gib-headed screws and other railwat track components used to secure railway track rails to sleepers supporting them