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Matrix for a hard composite
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Patent number 5,733,649
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Issue date Mar 31, 1998
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Kennametal Inc.
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Harold E. Kelley
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B22 - CASTING POWDER METALLURGY
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Matrix for a hard composite
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Patent number 5,733,664
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Issue date Mar 31, 1998
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Kennametal Inc.
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Harold E. Kelley
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B22 - CASTING POWDER METALLURGY
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Matrix for a hard composite
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Patent number 5,589,268
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Issue date Dec 31, 1996
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Kennametal Inc.
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Harold E. Kelley
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B22 - CASTING POWDER METALLURGY
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Arc hardfacing rod
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Patent number 5,250,355
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Issue date Oct 5, 1993
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Kennametal Inc.
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Harold C. Newman
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR