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Priority claimed from JP08182429Aexternal-prioritypatent/JP3128515B2/ja
Priority claimed from JP08286934Aexternal-prioritypatent/JP3015305B2/ja
Application filed by Shinagawa Refractories CofiledCriticalShinagawa Refractories Co
Application grantedgrantedCritical
Publication of ATE206338T1publicationCriticalpatent/ATE206338T1/de