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3744550
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B22 - CASTING POWDER METALLURGY
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3519058
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B22 - CASTING POWDER METALLURGY
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3506058
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Patent number 3,506,058
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B22 - CASTING POWDER METALLURGY
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3406738
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B22 - CASTING POWDER METALLURGY
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3348606
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B22 - CASTING POWDER METALLURGY
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2985931
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Issue date May 30, 1961
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B22 - CASTING POWDER METALLURGY
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2985927
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Patent number 2,985,927
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Issue date May 30, 1961
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B22 - CASTING POWDER METALLURGY
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2782471
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B22 - CASTING POWDER METALLURGY
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2767865
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B22 - CASTING POWDER METALLURGY
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2601199
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B22 - CASTING POWDER METALLURGY
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2599262
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B22 - CASTING POWDER METALLURGY
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1993439
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B22 - CASTING POWDER METALLURGY
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1925890
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B22 - CASTING POWDER METALLURGY
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1913485
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B22 - CASTING POWDER METALLURGY
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1911542
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B22 - CASTING POWDER METALLURGY
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1726024
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B22 - CASTING POWDER METALLURGY
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B22 - CASTING POWDER METALLURGY
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1509896
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B22 - CASTING POWDER METALLURGY
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1386104
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B22 - CASTING POWDER METALLURGY