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Plunger-type valve
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Patent number 4,501,299
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Issue date Feb 26, 1985
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Humphrey Products Company
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Michael A. Klimowicz
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Four-way poppet valve assembly
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Patent number 4,494,572
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Issue date Jan 22, 1985
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Humphrey Products Company
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Stanley M. Loveless
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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-
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Four-way valve employing fluid spring
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Patent number 4,187,884
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Issue date Feb 12, 1980
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General Gas Light Company
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Stanley M. Loveless
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Miniature four-way valve
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Patent number 4,026,325
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Issue date May 31, 1977
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General Gas Light Company
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Stanley M. Loveless
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Manifold and valve system
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Patent number 3,993,091
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Issue date Nov 23, 1976
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General Gas Light Company
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Stanley M. Loveless
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Safety control for valve
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Patent number 3,930,634
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Issue date Jan 6, 1976
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General Gas Light Company
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Stanley M. Loveless
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...