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3889344
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Patent number 3,889,344
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Issue date Jun 17, 1975
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B22 - CASTING POWDER METALLURGY
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3783934
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Patent number 3,783,934
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Issue date Jan 8, 1974
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B22 - CASTING POWDER METALLURGY
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3763923
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Patent number 3,763,923
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Issue date Oct 9, 1973
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B22 - CASTING POWDER METALLURGY
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3741282
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Patent number 3,741,282
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Issue date Jun 26, 1973
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B22 - CASTING POWDER METALLURGY
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3735848
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Patent number 3,735,848
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Issue date May 29, 1973
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B22 - CASTING POWDER METALLURGY
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3718177
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Patent number 3,718,177
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Issue date Feb 27, 1973
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B22 - CASTING POWDER METALLURGY
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3527286
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Patent number 3,527,286
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Issue date Sep 8, 1970
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B22 - CASTING POWDER METALLURGY
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3167829
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Patent number 3,167,829
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Issue date Feb 2, 1965
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B22 - CASTING POWDER METALLURGY