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
CA677145A
Inventor
Higuchi Kozo
Tsuyuguchi Michio
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.)
Hokkaido Tanko Kisen KK
Original Assignee
Hokkaido Tanko Kisen KK
Publication date
Application grantedgrantedCritical
Publication of CA677145ApublicationCriticalpatent/CA677145A/en