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
CA823723A
Inventor
Yoshimoto Toshio
Irako Koichi
Kaneko Seiya
Yoshii Hiroshi
Narumiya Tsuneaki
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.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Publication date
Application grantedgrantedCritical
Publication of CA823723ApublicationCriticalpatent/CA823723A/en