TREA

of step drills

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Industry

  • CPC
  • B24B3/242
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B24Grinding technology B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING DRESSING OR CONDITIONING OF ABRADING SURFACES FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS B24B3/00Sharpening cutting edges

Current Industry

B24B3/242of step drills
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Drill and method of manufacturing drill
    • Patent number 9,827,617
    • Issue date Nov 28, 2017
    • SUBARU CORPORATION
    • Manabu Saito
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Unibit re-sharpening device
    • Patent number 9,387,543
    • Issue date Jul 12, 2016
    • Richard Sommerfelt
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Apparatus for regrinding step drills
    • Patent number 4,489,523
    • Issue date Dec 25, 1984
    • The Boeing Company
    • Frank R. Webster
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Method for regrinding step drills
    • Patent number 4,475,320
    • Issue date Oct 9, 1984
    • The Boeing Company
    • Frank R. Webster
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Device for grinding spiral drills
    • Patent number 4,164,100
    • Issue date Aug 14, 1979
    • Robert Wolff
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3731434
    • Patent number 3,731,434
    • Issue date May 8, 1973
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3608248
    • Patent number 3,608,248
    • Issue date Sep 28, 1971
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3481084
    • Patent number 3,481,084
    • Issue date Dec 2, 1969
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3279128
    • Patent number 3,279,128
    • Issue date Oct 18, 1966
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3158969
    • Patent number 3,158,969
    • Issue date Dec 1, 1964
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3138903
    • Patent number 3,138,903
    • Issue date Jun 30, 1964
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3081585
    • Patent number 3,081,585
    • Issue date Mar 19, 1963
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2564496
    • Patent number 2,564,496
    • Issue date Aug 14, 1951
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2479281
    • Patent number 2,479,281
    • Issue date Aug 16, 1949
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2452703
    • Patent number 2,452,703
    • Issue date Nov 2, 1948
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2452702
    • Patent number 2,452,702
    • Issue date Nov 2, 1948
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2445194
    • Patent number 2,445,194
    • Issue date Jul 13, 1948
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2436535
    • Patent number 2,436,535
    • Issue date Feb 24, 1948
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2368342
    • Patent number 2,368,342
    • Issue date Jan 30, 1945
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2258727
    • Patent number 2,258,727
    • Issue date Oct 14, 1941
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2099724
    • Patent number 2,099,724
    • Issue date Nov 23, 1937
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1379853
    • Patent number 1,379,853
    • Issue date May 31, 1921
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    353908
    • Patent number 353,908
    • Issue date Dec 7, 1886
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    339421
    • Patent number 339,421
    • Issue date Apr 6, 1886
    • B24 - GRINDING POLISHING

Patents Applicationslast 30 patents