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3863341
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Patent number 3,863,341
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Issue date Feb 4, 1975
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3439608
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Patent number 3,439,608
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Issue date Apr 22, 1969
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B30 - PRESSES
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3427841
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Patent number 3,427,841
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Issue date Feb 18, 1969
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3286460
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Patent number 3,286,460
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Issue date Nov 22, 1966
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2996757
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Patent number 2,996,757
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Issue date Aug 22, 1961
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B44 - DECORATIVE ARTS
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2948923
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Patent number 2,948,923
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Issue date Aug 16, 1960
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B30 - PRESSES
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2714563
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Patent number 2,714,563
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Issue date Aug 2, 1955
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2648125
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Patent number 2,648,125
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Issue date Aug 11, 1953
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B22 - CASTING POWDER METALLURGY
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2633094
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Patent number 2,633,094
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Issue date Mar 31, 1953
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B30 - PRESSES
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2030686
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Patent number 2,030,686
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Issue date Feb 11, 1936
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...