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.)
ROBERT LEVAN CRAIN and ELWOOD KEMPTON PIECK WILLIAM AUGUSTUS PITTS, JR
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.)
Vetco Gray LLC
Original Assignee
Gray Tool Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gray Tool CofiledCriticalGray Tool Co
Application grantedgrantedCritical
Publication of AU414021B2publicationCriticalpatent/AU414021B2/en
Publication of AU1628567ApublicationCriticalpatent/AU1628567A/en