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Convertible center drill
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Patent number 10,549,354
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Issue date Feb 4, 2020
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Andrew Lankin
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3653287
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Patent number 3,653,287
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Issue date Apr 4, 1972
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3593602
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Patent number 3,593,602
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Issue date Jul 20, 1971
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3212373
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Patent number 3,212,373
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Issue date Oct 19, 1965
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3177742
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Patent number 3,177,742
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Issue date Apr 13, 1965
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3156145
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Patent number 3,156,145
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Issue date Nov 10, 1964
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3057237
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Patent number 3,057,237
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Issue date Oct 9, 1962
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3014391
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Patent number 3,014,391
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Issue date Dec 26, 1961
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2944454
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Patent number 2,944,454
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Issue date Jul 12, 1960
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2847890
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Patent number 2,847,890
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Issue date Aug 19, 1958
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2841042
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Patent number 2,841,042
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Issue date Jul 1, 1958
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2829552
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Patent number 2,829,552
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Issue date Apr 8, 1958
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2706872
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Patent number 2,706,872
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Issue date Apr 26, 1955
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2390627
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Patent number 2,390,627
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Issue date Dec 11, 1945
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2378811
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Patent number 2,378,811
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Issue date Jun 19, 1945
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2372916
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Patent number 2,372,916
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Issue date Apr 3, 1945
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2265568
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Patent number 2,265,568
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Issue date Dec 9, 1941
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2247721
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Patent number 2,247,721
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Issue date Jul 1, 1941
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1319585
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Patent number 1,319,585
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Issue date Oct 21, 1919
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1226825
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Patent number 1,226,825
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Issue date May 22, 1917
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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809353
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Patent number 809,353
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Issue date Jan 9, 1906
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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761507
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Patent number 761,507
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Issue date May 31, 1904
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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728013
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Patent number 728,013
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Issue date May 12, 1903
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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652860
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Patent number 652,860
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Issue date Jul 3, 1900
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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650213
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Patent number 650,213
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Issue date May 22, 1900
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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620955
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Patent number 620,955
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Issue date Mar 14, 1899
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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534666
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Patent number 534,666
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Issue date Feb 26, 1895
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR