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.)
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.)
OIL CENTER TOOL CO
Original Assignee
OIL CENTER TOOL CO
Filing date
Publication date
Application filed by OIL CENTER TOOL COfiledCriticalOIL CENTER TOOL CO
Application grantedgrantedCritical
Publication of AU988961ApublicationCriticalpatent/AU988961A/en
Publication of AU250562B2publicationCriticalpatent/AU250562B2/en