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Keith C. Johansen Nicolas G. Snoke

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PRESSURE-RETAINING SEALS USEFUL IN WELLHEADS

16/426,990 | U.S. Patent Application

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Location ELECTRONIC

Filed May 30, 2019

Examiner DANIEL P STEPHENSON

Class 166

Art Group 3676

Case Type Utility - 166/085100

Last Updated: 9 months, 3 weeks ago

Date	#	Transaction
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PRESSURE-RETAINING SEALS USEFUL IN WELLHEADS

16/426,990 | U.S. Patent Application

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