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Direct cooled annular mold
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Patent number 5,685,359
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Issue date Nov 11, 1997
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Wagstaff, Inc.
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Robert Bruce Wagstaff
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B22 - CASTING POWDER METALLURGY
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Annular metal casting unit
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Patent number 5,323,841
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Issue date Jun 28, 1994
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Wagstaff, Inc.
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Frank E. Wagstaff
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B22 - CASTING POWDER METALLURGY
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Metal casting unit
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Patent number 5,318,098
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Issue date Jun 7, 1994
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Wagstaff, Inc.
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Robert B. Wagstaff
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B22 - CASTING POWDER METALLURGY
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