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
CA847570A
Inventor
Noro Hiromitsu
Kashikura Hisae
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.)
HAYASHI DENKO KK
Original Assignee
HAYASHI DENKO KK
Publication date
Application grantedgrantedCritical
Publication of CA847570ApublicationCriticalpatent/CA847570A/en