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Expanding gate valve
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Patent number 4,531,710
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Issue date Jul 30, 1985
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F.I.P., S.A. De C.V.
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Alejandro Tort O.
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Gate valve
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Patent number 4,326,698
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Issue date Apr 27, 1982
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FIP, S. A. de C.V.
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Daniel G. Constantino
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Expanding gate valve
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Patent number 4,189,127
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Issue date Feb 19, 1980
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FIP, S. A. de C.V.
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Daniel G. Constantino
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Gate valve
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Patent number 4,165,064
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Issue date Aug 21, 1979
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FIP, S.A. de C.V.
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Madden T. Works
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...