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
CA874763A
Inventor
Shirozu Atsushi
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.)
CIRCLE TETSUKOJO KK
Nippon Tensai Seito KK
Original Assignee
CIRCLE TETSUKOJO KK
Nippon Tensai Seito KK
Publication date
Application grantedgrantedCritical
Publication of CA874763ApublicationCriticalpatent/CA874763A/en