Lawrence F. Angelo

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Conroe, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Control valve and electrical and hydraulic control system
- Patent number 4,467,833
- Issue date Aug 28, 1984
- NL Industries, Inc.
- Lawrence E. Satterwhite
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for elevating a mobile rig
- Patent number 4,348,780
- Issue date Sep 14, 1982
- WellTech, Inc.
- Lawrence F. Angelo
- E21 - EARTH DRILLING MINING