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
CA693915A
Inventor
Masuda Akiyoshi
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.)
Nippon Tensai Seito KK
Original Assignee
Nippon Tensai Seito KK
Publication date
Application grantedgrantedCritical
Publication of CA693915ApublicationCriticalpatent/CA693915A/en