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Methods of pouring metal
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Patent number 4,570,692
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Issue date Feb 18, 1986
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William G. Wilson
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B22 - CASTING POWDER METALLURGY
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3705672
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Patent number 3,705,672
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Issue date Dec 12, 1972
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B22 - CASTING POWDER METALLURGY
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3692091
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Patent number 3,692,091
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Issue date Sep 19, 1972
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B22 - CASTING POWDER METALLURGY
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3476549
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Patent number 3,476,549
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Issue date Nov 4, 1969
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B22 - CASTING POWDER METALLURGY
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3189315
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Patent number 3,189,315
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Issue date Jun 15, 1965
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B22 - CASTING POWDER METALLURGY
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3158911
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Patent number 3,158,911
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Issue date Dec 1, 1964
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B22 - CASTING POWDER METALLURGY
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2741814
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Patent number 2,741,814
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Issue date Apr 17, 1956
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B22 - CASTING POWDER METALLURGY
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2335385
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Patent number 2,335,385
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Issue date Nov 30, 1943
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B22 - CASTING POWDER METALLURGY
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2087824
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Patent number 2,087,824
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Issue date Jul 20, 1937
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B22 - CASTING POWDER METALLURGY
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1982763
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Patent number 1,982,763
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Issue date Dec 4, 1934
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B22 - CASTING POWDER METALLURGY
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1923119
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Patent number 1,923,119
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Issue date Aug 22, 1933
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B22 - CASTING POWDER METALLURGY
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1767055
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Patent number 1,767,055
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Issue date Jun 24, 1930
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B22 - CASTING POWDER METALLURGY
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1568854
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Patent number 1,568,854
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Issue date Jan 5, 1926
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B22 - CASTING POWDER METALLURGY
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1417269
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Patent number 1,417,269
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Issue date May 23, 1922
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B22 - CASTING POWDER METALLURGY