US Patent 9260933 Modular ball drop
Patent 9260933 was granted and assigned to Oil States Energy Services L.L.C. on February, 2016 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
January 15, 2013
Date of Patent
February 16, 2016
Patent Applicant
Patent Application Number
13742043
Patent Citations Received
•••
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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