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.)
NEC Corp
Sohgo Security Services Co Ltd
Original Assignee
Sohgo Security Services Co Ltd
Nippon Electric Co Ltd
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 Sohgo Security Services Co Ltd, Nippon Electric Co LtdfiledCriticalSohgo Security Services Co Ltd
Priority to JP19580681ApriorityCriticalpatent/JPS5897795A/ja
Publication of JPS5897795ApublicationCriticalpatent/JPS5897795A/ja
Publication of JPH0150959B2publicationCriticalpatent/JPH0150959B2/ja