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
Inventor
Tanaka Yukio
Isobe Kosaku
Furusawa Akira
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.)
Kokusai Electric Corp
Original Assignee
Kokusai Electric Corp
Publication date
Application grantedgrantedCritical
Publication of CA744685ApublicationCriticalpatent/CA744685A/en