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Telescoping joint
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Patent number 4,761,023
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Issue date Aug 2, 1988
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Cameron Iron Works, Inc.
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John N. Troxell
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Rod locking device
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Patent number 4,601,232
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Issue date Jul 22, 1986
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Cameron Iron Works, Inc.
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John N. Troxell
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Pressure relief valve
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Patent number 4,201,242
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Issue date May 6, 1980
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Cameron Iron Works, Inc.
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John N. Troxell
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...