Application

17392858 · Nested Drill Bit Assembly For Drilling With Casing

Filed 2021-08-03 · Granted · Patent 11643879 (2023-05-09) The official file ↗The patent and its PDF ↗ · Art unit 3674 · Examiner David P. Carroll Easy · CPC E21B 7/20 · Halliburton Energy Services, Inc. · HALLIBURTON ENERGY SERVICES, INC.

Office actions

first was Notice of allowance

RCEs

no appeal

To first action

18.2 mo

to disposition 21.2 mo

Statutes raised

0 actions read

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