Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from JP1272030Aexternal-prioritypatent/JP2704301B2/en
Application filed by Nippon Mining CofiledCriticalNippon Mining Co
Priority to SG111994ApriorityCriticalpatent/SG111994G/en
Publication of SG111994GpublicationCriticalpatent/SG111994G/en