Apparatus for controlling the annulus of an inner string and casing string | Patent Publication Number 20030178192

US 20030178192 A1
Patent NumberUS 06719046 B2
Application Number10390984
Filled DateMar 17, 2003
Priority DateMar 20, 2002
Publication DateSep 25, 2003
Original Assignee
Current Assignee
Inventor/ApplicantsAlbert Augustus Mullins
Albert Augustus Mullins
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