US Patent 11542775 Anti-extrusion assembly and a sealing system comprising same
Patent 11542775 was granted and assigned to Northstar Drillstem Testers on January, 2023 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
August 20, 2019
Date of Patent
January 3, 2023
Patent Applicant
Patent Application Number
17270389
Patent Citations
Patent Jurisdiction
Patent Number
Patent Primary Examiner
CPC Code
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