using devices specially adapted for domestic use

Patents Grantslast 30 patents

  • Information Patent Grant

    High speed drill bit sharpener

    • Patent number 11,945,072
    • Issue date Apr 2, 2024
    • Bryan Chad Thomas
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Portable drill bit sharpener

    • Patent number 8,690,643
    • Issue date Apr 8, 2014
    • Western New England University
    • Glenn E. Vallee
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Drill bit dresser

    • Patent number 7,507,149
    • Issue date Mar 24, 2009
    • Lawrence M. Douglas
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Drill sharpener

    • Patent number 7,172,498
    • Issue date Feb 6, 2007
    • Professional Tool Manufacturing, LLC
    • David A. Bernard
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Drill bit sharpener

    • Patent number 6,676,500
    • Issue date Jan 13, 2004
    • Sophin Lin
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Precision drill sharpener and grinding wheel assembly therefor

    • Patent number 6,626,745
    • Issue date Sep 30, 2003
    • Darex Corporation
    • David A. Bernard
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Drill grinder

    • Patent number 6,244,938
    • Issue date Jun 12, 2001
    • Lisle Corporation
    • Randall J. Ploeger
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Drill bit sharpening apparatus

    • Patent number 6,116,995
    • Issue date Sep 12, 2000
    • Yu Yi Chao
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Drill bit case and drill sharpener package

    • Patent number 5,951,385
    • Issue date Sep 14, 1999
    • Credo Tool Company
    • Debbie A. Newhouse
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Precision drill sharpener and grinding wheel assembly therefor

    • Patent number 5,735,732
    • Issue date Apr 7, 1998
    • David A. Bernard
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Bit sharpener

    • Patent number 5,676,591
    • Issue date Oct 14, 1997
    • Cheng-hsien Huang
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Electric drill completed with a set of grinding equipments

    • Patent number 5,327,685
    • Issue date Jul 12, 1994
    • Wan-Li Chang
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Grinding device

    • Patent number 5,251,407
    • Issue date Oct 12, 1993
    • Mayka Research and Development
    • Mohammad Afshar
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Drill grinding device

    • Patent number 5,210,977
    • Issue date May 18, 1993
    • Folke Werner
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Drill bit sharpener

    • Patent number 5,184,425
    • Issue date Feb 9, 1993
    • Steven P. Anderson
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Universal device for sharpening drill bits

    • Patent number 4,974,372
    • Issue date Dec 4, 1990
    • Vinit P. Chantalat
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Drill bit sharpener

    • Patent number 4,916,867
    • Issue date Apr 17, 1990
    • David N. Lockwood
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Hand held drill with integral drill bit sharpener

    • Patent number 4,850,150
    • Issue date Jul 25, 1989
    • Steven C. Bishop
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3742652

    • Patent number 3,742,652
    • Issue date Jul 3, 1973
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3698140

    • Patent number 3,698,140
    • Issue date Oct 17, 1972
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3694967

    • Patent number 3,694,967
    • Issue date Oct 3, 1972
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3599302

    • Patent number 3,599,302
    • Issue date Aug 17, 1971
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3393477

    • Patent number 3,393,477
    • Issue date Jul 23, 1968
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3340651

    • Patent number 3,340,651
    • Issue date Sep 12, 1967
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3224146

    • Patent number 3,224,146
    • Issue date Dec 21, 1965
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3060645

    • Patent number 3,060,645
    • Issue date Oct 30, 1962
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2932924

    • Patent number 2,932,924
    • Issue date Apr 19, 1960
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2848852

    • Patent number 2,848,852
    • Issue date Aug 26, 1958
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2800755

    • Patent number 2,800,755
    • Issue date Jul 30, 1957
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2177644

    • Patent number 2,177,644
    • Issue date Oct 31, 1939
    • B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

  • Information Patent Application

    PORTABLE DRILL BIT SHARPENER

    • Publication number 20120009853
    • Publication date Jan 12, 2012
    • WESTERN NEW ENGLAND UNIVERSITY
    • Glenn E. Vallee
    • B24 - GRINDING POLISHING
  • Information Patent Application

    Drill sharpener

    • Publication number 20060003676
    • Publication date Jan 5, 2006
    • Professional Tool Manufacturing
    • David A. Bernard
    • B24 - GRINDING POLISHING