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Modular check valve system
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Patent number 9,429,956
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Issue date Aug 30, 2016
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Petrotechnologies, Inc.
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David Baer Levy
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Testing system for connectors
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Patent number 8,650,934
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Issue date Feb 18, 2014
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Petrotechnologies, Inc.
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David Levy
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Method for testing connectors
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Patent number 8,408,295
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Issue date Apr 2, 2013
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Petro Technologies, Inc.
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David Levy
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Method of energizing a connector
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Patent number 8,176,612
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Issue date May 15, 2012
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Petrotechnologies, Inc.
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David Levy
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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