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
CA735831A
Inventor
Iwauchi Shigeki
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.)
MITSUO IWAUCHI
Original Assignee
MITSUO IWAUCHI
Publication date
Application grantedgrantedCritical
Publication of CA735831ApublicationCriticalpatent/CA735831A/en