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 JP5131167Aexternal-prioritypatent/JP2640321B2/ja
Application filed by Komatsu Mfg Co LtdfiledCriticalKomatsu Mfg Co Ltd
Application grantedgrantedCritical
Publication of TW239237BpublicationCriticalpatent/TW239237B/zh