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RIGIVTW Fig . de GLEISWEICHE TRACK POINTS AIGUILLAGE RIGIVTW Europisches Patentamt EUROPISCHE PATENTSCHRIFT EP Patentblatt Anmeldenummer Anmeldetag Int Cl EB Internationale Anmeldenummer PCT Internationale Verffentlichungsnummer WO Gazette Europisches Patentamt own drawing Rebel IV PDSwitzerlandofficial