P. H. Jones Hydrogeology, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4359092 Method and apparatus for natural gas and thermal energy production from aquifersExpiredOct 18, 79Nov 16, 82[E21B]
4319635 Method for enhanced oil recovery by geopressured waterfloodExpiredFeb 29, 80Mar 16, 82[E21B]
4279307 Natural gas production from geopressured aquifersExpiredMar 09, 79Jul 21, 81[E21B]

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