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Bhanubhai H. Patel
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Grand Prairie, TX, US
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last 30 patents
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Patent Grant
Metal-to-metal sliding side door for wells
Patent number
5,794,699
Issue date
Aug 18, 1998
Halliburton Energy Services, Inc.
Robert C. Hammett
E21 - EARTH DRILLING MINING
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Patent Grant
Well apparatus
Patent number
4,624,310
Issue date
Nov 25, 1986
Otis Engineering Corporation
Ralph H. Echols
E21 - EARTH DRILLING MINING