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3851364
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Patent number 3,851,364
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Issue date Dec 3, 1974
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3162075
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Patent number 3,162,075
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Issue date Dec 22, 1964
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2621396
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Patent number 2,621,396
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Issue date Dec 16, 1952
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2403405
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Patent number 2,403,405
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Issue date Jul 2, 1946
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2355072
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Patent number 2,355,072
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Issue date Aug 8, 1944
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1551739
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Patent number 1,551,739
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Issue date Sep 1, 1925
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR