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3834004
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Patent number 3,834,004
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Issue date Sep 10, 1974
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B22 - CASTING POWDER METALLURGY
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3814788
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Patent number 3,814,788
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Issue date Jun 4, 1974
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B22 - CASTING POWDER METALLURGY
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3626744
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Patent number 3,626,744
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Issue date Dec 14, 1971
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3264388
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Patent number 3,264,388
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Issue date Aug 2, 1966
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B22 - CASTING POWDER METALLURGY
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3258514
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Patent number 3,258,514
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Issue date Jun 28, 1966
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B22 - CASTING POWDER METALLURGY
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3231373
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Patent number 3,231,373
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Issue date Jan 25, 1966
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B22 - CASTING POWDER METALLURGY
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3183287
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Patent number 3,183,287
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Issue date May 11, 1965
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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3157914
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Patent number 3,157,914
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Issue date Nov 24, 1964
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B22 - CASTING POWDER METALLURGY
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3158474
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Patent number 3,158,474
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Issue date Nov 24, 1964
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B22 - CASTING POWDER METALLURGY
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2925619
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Patent number 2,925,619
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Issue date Feb 23, 1960
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B22 - CASTING POWDER METALLURGY
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2902714
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Patent number 2,902,714
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Issue date Sep 8, 1959
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B22 - CASTING POWDER METALLURGY
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2894282
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Patent number 2,894,282
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Issue date Jul 14, 1959
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2844845
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Patent number 2,844,845
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Issue date Jul 29, 1958
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B22 - CASTING POWDER METALLURGY
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2784453
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Patent number 2,784,453
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Issue date Mar 12, 1957
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B22 - CASTING POWDER METALLURGY