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Lined structure
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Patent number 4,971,101
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Issue date Nov 20, 1990
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Cameron Iron Works USA, Inc.
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James R. Becker
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B22 - CASTING POWDER METALLURGY
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Method of forging dual alloy billets
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Patent number 4,843,856
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Issue date Jul 4, 1989
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Cameron Iron Works USA, Inc.
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Prabir R. Bhowal
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Method of producing a forged product
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Patent number 4,356,612
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Issue date Nov 2, 1982
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Cameron Iron Works, Inc.
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James R. Becker
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR