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.)
Expired
Application number
CA653856A
Inventor
Ito Sukehiro
Morita Masasuke
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
Original Assignee
Nippon Electric Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA653856ApublicationCriticalpatent/CA653856A/en