US Patent 11174702 Dual flapper isolation valve
Patent 11174702 was granted and assigned to Schlumberger on November, 2021 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
August 15, 2018
Date of Patent
November 16, 2021
Patent Applicant
Patent Application Number
16639288
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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