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
CA765398A
Inventor
Hiraoka Tetsuo
Iwai Issei
Yura Yasuo
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.)
Sankyo Co Ltd
Original Assignee
Sankyo Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA765398ApublicationCriticalpatent/CA765398A/en