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Core cutting machine
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Patent number 5,713,254
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Issue date Feb 3, 1998
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Automatic Handling, Inc.
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David J. Pienta
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2521385
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Patent number 2,521,385
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Issue date Sep 5, 1950
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B26 - HAND CUTTING TOOLS CUTTING SEVERING
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1002690
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Patent number 1,002,690
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Issue date Sep 5, 1911
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B26 - HAND CUTTING TOOLS CUTTING SEVERING