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Jerry D. Smith
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The Woodlands, TX, US
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last 30 patents
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Patent Grant
Method of providing an internal circumferential shoulder in a cylin...
Patent number
6,484,382
Issue date
Nov 26, 2002
ERC Industries, Inc.
Jerry D. Smith
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Patent Grant
Assembly for sealing the annulus between concentric cylindrical sur...
Patent number
6,176,310
Issue date
Jan 23, 2001
ERC Industries, Inc.
Jerry D. Smith
E21 - EARTH DRILLING MINING