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
CA850437A
Inventor
Niimi Masahiro
Furukawa Tetsu
Masada Hitoshi
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 SHIRYO KOGYO CO
Original Assignee
NIPPON SHIRYO KOGYO CO
Publication date
Application grantedgrantedCritical
Publication of CA850437ApublicationCriticalpatent/CA850437A/en