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Piston with bi-metallic dome
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Patent number 8,813,357
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Issue date Aug 26, 2014
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GM Global Technology Operations LLC
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Joseph C. Kopchick
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Diesel piston with bi-metallic dome
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Patent number 8,763,247
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Issue date Jul 1, 2014
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GM Global Technology Operations LLC
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Joseph C. Kopchick
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Cooling gallery for pistons
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Patent number 5,979,298
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Issue date Nov 9, 1999
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Zellner Pistons, LLC
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John P. Whitacre
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B22 - CASTING POWDER METALLURGY
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Method for casting pistons
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Patent number 5,901,772
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Issue date May 11, 1999
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Izumi Industries, Ltd.
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Masaharu Hoshina
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B22 - CASTING POWDER METALLURGY
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Piston assembly
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Patent number 5,794,517
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Issue date Aug 18, 1998
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Firma Carl Freudenberg
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Juergen Emig
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Piston with cavity
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Patent number 5,551,388
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Issue date Sep 3, 1996
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T&N Technology Limited
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Roger H. Slee
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B22 - CASTING POWDER METALLURGY
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