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
CA888635A
Inventor
Yamamura Toshio
Omote Yuichi
Sato Shiro
Hiyama Tomochika
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.)
Kanto Denka Kogyo Co Ltd
Original Assignee
Kanto Denka Kogyo Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA888635ApublicationCriticalpatent/CA888635A/en