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
CA075721A
Inventor
Koguma Kazumasa
Kanamaru Yuichi
Takeuchi Hiroshi
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.)
Sony Corp
Original Assignee
Sony Corp
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 JP1578069Aexternal-prioritypatent/JPS4912175B1/ja
Application filed by Sony CorpfiledCriticalSony Corp
Application grantedgrantedCritical
Publication of CA935801ApublicationCriticalpatent/CA935801A/en