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Plastic-lined pipe
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Patent number 5,152,323
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Issue date Oct 6, 1992
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Allied Tube & Conduit Corporation
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David A. Shotts
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Conduit coupling assembly
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Patent number 4,957,314
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Issue date Sep 18, 1990
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Allied Tube & Conduit Corporation
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Raffaele Basile
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Conduit coupling assembly
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Patent number 4,549,756
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Issue date Oct 29, 1985
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Allied Tube & Conduit Corporation
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Raffaele Basile
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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