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
CA694088A
Inventor
Takagi Toshiaki
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 SHINPU KK
Original Assignee
NIPPON SHINPU KK
Publication date
Application grantedgrantedCritical
Publication of CA694088ApublicationCriticalpatent/CA694088A/en