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Application filed by Tokai Ryokaku Tetsudo Kk, Dengyo Inc, Nhk Spring Co LtdfiledCriticalTokai Ryokaku Tetsudo Kk
Priority claimed from PCT/IB1997/001147external-prioritypatent/WO1999012762A1/en
Application grantedgrantedCritical
Publication of ATE232479T1publicationCriticalpatent/ATE232479T1/en