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
CA855135A
Inventor
Yoshimura Saburo
Yokoi Hisaaki
Yamane Motoo
Sato Koichiro
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.)
KOKUSAKU PULP INDUSTRY Co
Original Assignee
KOKUSAKU PULP INDUSTRY Co
Publication date
Application grantedgrantedCritical
Publication of CA855135ApublicationCriticalpatent/CA855135A/en