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3859407
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B22 - CASTING POWDER METALLURGY
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Patent number 3,414,940
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Issue date Dec 10, 1968
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B22 - CASTING POWDER METALLURGY
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Patent number 3,344,213
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C03 - GLASS MINERAL OR SLAG WOOL
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2456697
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C03 - GLASS MINERAL OR SLAG WOOL
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2359798
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C03 - GLASS MINERAL OR SLAG WOOL
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1493044
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C03 - GLASS MINERAL OR SLAG WOOL
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C03 - GLASS MINERAL OR SLAG WOOL