Application

14917371 · PIERCING MANDREL HAVING AN IMPROVED SERVICE LIFE FOR PRODUCING SEAMLESS TUBES

Filed 2016-03-08 · Granted · Patent 9937540 (2018-04-10) The official file ↗The patent and its PDF ↗ · Art unit 3725 · Examiner Teresa M Ekiert Typical · CPC B21B 25/00 · Vallourec Deutschland GmbH · Gardner, Linn, Burkhart & Ondersma LLP

Office actions

first was Non-final rejection

RCEs

no appeal

To first action

14.1 mo

to disposition 25.1 mo

Statutes raised

102 103 112

2 actions read

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