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.)
GERARDUS KENETH and ROBERT ASHLEY CUNNINGHAM JOHANNES
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.)
Hughes Tool Co
Original Assignee
Hughes Tool Co
Filing date
Publication date
Application filed by Hughes Tool CofiledCriticalHughes Tool Co
Application grantedgrantedCritical
Publication of AU260251B2publicationCriticalpatent/AU260251B2/en
Publication of AU1097561ApublicationCriticalpatent/AU1097561A/en