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Valve positioner system
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Patent number 6,745,084
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Issue date Jun 1, 2004
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Dresser, Inc.
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Henry Boger
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Valve positioner system
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Patent number 6,453,261
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Issue date Sep 17, 2002
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Dresser, Inc.
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Henry Boger
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G05 - CONTROLLING REGULATING
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Valve positioner system
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Patent number 6,272,401
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Issue date Aug 7, 2001
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Dresser Industries, Inc.
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Henry Boger
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G05 - CONTROLLING REGULATING
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Pneumatic limb control system
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Patent number 4,876,944
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Issue date Oct 31, 1989
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Duke University
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James F. Wilson
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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