Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Hitachi Process Computer Engineering Inc
Original Assignee
Hitachi Ltd
Hitachi Process Computer Engineering Inc
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
Application filed by Hitachi Ltd, Hitachi Process Computer Engineering IncfiledCriticalHitachi Ltd
Priority to JP57076575ApriorityCriticalpatent/JPS58194088A/ja
Publication of JPS58194088ApublicationCriticalpatent/JPS58194088A/ja
Publication of JPH0126071B2publicationCriticalpatent/JPH0126071B2/ja