Donald G. Parmer, JR.

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Magnolia, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Launching tool for releasing cement plugs downhole
- Patent number 7,845,400
- Issue date Dec 7, 2010
- Baker Hughes Incorporated
- Sidney K. Smith, Jr.
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Launching Tool for Releasing Cement Plugs Downhole
- Publication number 20090188664
- Publication date Jul 30, 2009
- Sidney K. Smith, JR.
- E21 - EARTH DRILLING MINING