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B22 - CASTING POWDER METALLURGY
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2148132
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Patent number 2,148,132
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B22 - CASTING POWDER METALLURGY
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2138410
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Patent number 2,138,410
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B22 - CASTING POWDER METALLURGY
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1905490
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B22 - CASTING POWDER METALLURGY
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1828882
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B22 - CASTING POWDER METALLURGY
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1780470
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B22 - CASTING POWDER METALLURGY
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1726025
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B22 - CASTING POWDER METALLURGY
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1725839
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B22 - CASTING POWDER METALLURGY
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1620406
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B22 - CASTING POWDER METALLURGY
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1605374
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B22 - CASTING POWDER METALLURGY
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1544038
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B22 - CASTING POWDER METALLURGY
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1535335
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B22 - CASTING POWDER METALLURGY
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1529324
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B22 - CASTING POWDER METALLURGY
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1327419
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893797
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882823
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653614
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564891
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532443
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531901
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527984
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472312
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B22 - CASTING POWDER METALLURGY