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
CA869539A
Inventor
Watatani Mitsuo
Kishida Yukichi
Nakazawa Junichi
Matsuda Hidebumi
Sato Yoshio
Miyamura Toshihide
Hiraoka Tetsuo
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 CA869539ApublicationCriticalpatent/CA869539A/en