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3353402
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Patent number 3,353,402
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Issue date Nov 21, 1967
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2409324
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Patent number 2,409,324
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Issue date Oct 15, 1946
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1889502
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Patent number 1,889,502
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Issue date Nov 29, 1932
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1681087
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Patent number 1,681,087
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Issue date Aug 14, 1928
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1539337
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Patent number 1,539,337
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Issue date May 26, 1925
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1399921
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Patent number 1,399,921
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Issue date Dec 13, 1921
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR