Application

13177874 · CASING AND LINER DRILLING SHOES WITH PORTIONS CONFIGURED TO FAIL RESPONSIVE TO PRESSURE, AND RELATED METHODS

Filed 2011-07-07 · Granted · Patent 8225887 (2012-07-24) The official file ↗The patent and its PDF ↗ · Art unit 3676 · Examiner Jennifer Hawkins Gay Typical · CPC E21B 10/55 · BAKER HUGHES HOLDINGS LLC · Crowe & Dunlevy , A Professional Corporation

Office actions

first was Non-final rejection

RCEs

no appeal

To first action

2.4 mo

to disposition 12.6 mo

Statutes raised

102 103 112 DP

2 actions read

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