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
CA887695A
Inventor
Tsukamoto Tetsuo
Ueno Hiroshi
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.)
Toyo Seikan Group Holdings Ltd
Original Assignee
Toyo Seikan Kaisha Ltd
Publication date
Application grantedgrantedCritical
Publication of CA887695ApublicationCriticalpatent/CA887695A/en