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.)
Filing date
Publication date
Priority claimed from JP1293998Aexternal-prioritypatent/JP2573375B2/en
Application filed by Hitachi Powdered MetalsfiledCriticalHitachi Powdered Metals
Priority to SG87094ApriorityCriticalpatent/SG87094G/en
Publication of SG87094GpublicationCriticalpatent/SG87094G/en