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3786981
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Patent number 3,786,981
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Issue date Jan 22, 1974
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3769677
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Patent number 3,769,677
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Issue date Nov 6, 1973
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3462574
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Patent number 3,462,574
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Issue date Aug 19, 1969
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3203085
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Patent number 3,203,085
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Issue date Aug 31, 1965
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3186618
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Patent number 3,186,618
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Issue date Jun 1, 1965
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H01 - BASIC ELECTRIC ELEMENTS
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2925485
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Patent number 2,925,485
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Issue date Feb 16, 1960
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR