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Gas injector
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Patent number 5,198,179
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Issue date Mar 30, 1993
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Injectall Limited
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Kenneth W. Bates
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B22 - CASTING POWDER METALLURGY
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Molten metal sampling
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Patent number 4,995,270
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Issue date Feb 26, 1991
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Injectall Limited
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Anthony Thrower
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C21 - METALLURGY OF IRON
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Sliding gate valves
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Patent number 4,543,981
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Issue date Oct 1, 1985
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USS Engineers and Consultants, Inc.
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Kenneth W. Bates
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B22 - CASTING POWDER METALLURGY
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