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
CA184,244A
Inventor
J. Robert Fort
Charles M. Edwards
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.)
United Geophysical Corp
Original Assignee
United Geophysical Corp
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 United Geophysical CorpfiledCriticalUnited Geophysical Corp
Application grantedgrantedCritical
Publication of CA1019055ApublicationCriticalpatent/CA1019055A/en