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Valve operating handle
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Patent number 5,299,597
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Issue date Apr 5, 1994
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Fort Vale Engineering Limited
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Edward S. Fort
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valve assembly
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Patent number 5,156,374
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Issue date Oct 20, 1992
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Fort Vale Engineering Limited
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Edward S. Fort
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Manlid for a container tank
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Patent number 5,105,966
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Issue date Apr 21, 1992
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Fort Vale Engineering Limited
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Edward S. Fort
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Seal
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Patent number 4,915,355
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Issue date Apr 10, 1990
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Fort Vale Engineering Limited
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Edward S. Fort
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valve seals
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Patent number 4,691,734
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Issue date Sep 8, 1987
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Fort Vale Engineering Ltd.
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Edward S. Fort
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valves
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Patent number 4,590,959
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Issue date May 27, 1986
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Fort Vale Engineering Limited
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Edward S. Fort
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...