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
CA886077A
Inventor
Tada Yoshinosuke
Hosoi Yasunobu
Katsumata Fukio
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.)
Yahagi Seitetsu KK
Original Assignee
Yahagi Seitetsu KK
Publication date
Application grantedgrantedCritical
Publication of CA886077ApublicationCriticalpatent/CA886077A/en