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
CA845941A
Inventor
W. Shaw Clarence
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.)
J Ray McDermott and Co Inc
Original Assignee
J Ray McDermott and Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA845941ApublicationCriticalpatent/CA845941A/en