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Foundry sand
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Patent number 6,516,863
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Issue date Feb 11, 2003
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New Ideas, LLC
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Duane Alan McVane
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B22 - CASTING POWDER METALLURGY
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Foundry sand
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Patent number 6,435,262
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New Ideas, LLC
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Duane Alan McVane
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B22 - CASTING POWDER METALLURGY
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Core sand preparation apparatus
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Issue date Oct 19, 1999
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Simpson Technologies Corporation
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David O. Kennedy
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B22 - CASTING POWDER METALLURGY
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Core sand preparation apparatus
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Issue date Sep 9, 1997
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Simpson Technologies Corporation
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David O. Kennedy
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B22 - CASTING POWDER METALLURGY
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Sand mixer
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Patent number 4,304,493
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Issue date Dec 8, 1981
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Donald M. Frankie
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B28 - WORKING CEMENT, CLAY, OR STONE
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3920223
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Patent number 3,920,223
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3779520
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B22 - CASTING POWDER METALLURGY
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3464677
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B22 - CASTING POWDER METALLURGY
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3456924
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B22 - CASTING POWDER METALLURGY
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3451659
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B22 - CASTING POWDER METALLURGY
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3336007
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B28 - WORKING CEMENT, CLAY, OR STONE
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3070858
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B22 - CASTING POWDER METALLURGY
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2953359
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B22 - CASTING POWDER METALLURGY
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2877524
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B22 - CASTING POWDER METALLURGY
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2487139
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B22 - CASTING POWDER METALLURGY
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B22 - CASTING POWDER METALLURGY
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1948805
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B22 - CASTING POWDER METALLURGY