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Sand dispensing assembly
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Patent number 4,809,883
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Issue date Mar 7, 1989
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AMSTED Industries Incorporated
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Jaime F. Pozo
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B22 - CASTING POWDER METALLURGY
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Molding sand feeding device
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Patent number 4,181,171
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Issue date Jan 1, 1980
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Hitachi Metals, Ltd.
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Mikio Yonemitsu
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B22 - CASTING POWDER METALLURGY
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3912238
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Patent number 3,912,238
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Issue date Oct 14, 1975
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B22 - CASTING POWDER METALLURGY
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3662812
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Patent number 3,662,812
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Issue date May 16, 1972
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B22 - CASTING POWDER METALLURGY
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3601161
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Patent number 3,601,161
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Issue date Aug 24, 1971
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B22 - CASTING POWDER METALLURGY
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3522927
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Patent number 3,522,927
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Issue date Aug 4, 1970
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B22 - CASTING POWDER METALLURGY
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3520348
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Patent number 3,520,348
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Issue date Jul 14, 1970
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B22 - CASTING POWDER METALLURGY
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3516477
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Patent number 3,516,477
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Issue date Jun 23, 1970
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B22 - CASTING POWDER METALLURGY
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3472307
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Patent number 3,472,307
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Issue date Oct 14, 1969
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B22 - CASTING POWDER METALLURGY
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3369645
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Patent number 3,369,645
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Issue date Feb 20, 1968
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B22 - CASTING POWDER METALLURGY
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3297366
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Patent number 3,297,366
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Issue date Jan 10, 1967
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B22 - CASTING POWDER METALLURGY