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Plotter drum
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Patent number 5,276,465
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Issue date Jan 4, 1994
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Gerber Systems Corporation
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Alan W. Menard
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G06 - COMPUTING CALCULATING COUNTING
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Core pinning machine
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Patent number 4,940,074
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Issue date Jul 10, 1990
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United Technologies Corporation
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Alan W. Menard
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B22 - CASTING POWDER METALLURGY
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Straight line shear mechanism
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Patent number 4,869,746
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Issue date Sep 26, 1989
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Emhart Industries, Inc.
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Douglas W. Wright
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C03 - GLASS MINERAL OR SLAG WOOL