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with the writing-cores brought into position by gravity

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  • CPC
  • B43K21/04
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B43Writing accessories B43KIMPLEMENTS FOR WRITING OR DRAWING B43K21/00Propelling pencils

Current Industry

B43K21/04with the writing-cores brought into position by gravity
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Writing utensil with retract piece
    • Patent number 9,914,322
    • Issue date Mar 13, 2018
    • Zebra Co., Ltd.
    • Eriko Soejima
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument
    • Patent number 7,651,289
    • Issue date Jan 26, 2010
    • Nehad Bahbahani
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Double chuck type mechanical pencil and internal writing mechanism...
    • Patent number 6,382,859
    • Issue date May 7, 2002
    • Kotobuki & Co., Ltd.
    • Yoshio Noguchi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil with tapered supply chamber
    • Patent number 5,033,894
    • Issue date Jul 23, 1991
    • Mitsubishi Pencil Co., Ltd.
    • Yoichi Ando
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Lead cartridge with an openable capping structure
    • Patent number 4,998,837
    • Issue date Mar 12, 1991
    • Kotobuki & Co., Ltd.
    • Hidehei Kageyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil with rotary discharge member
    • Patent number 4,915,521
    • Issue date Apr 10, 1990
    • Saint Island International Patent and Law Offices
    • Lee-Fen Hwang
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Connector for propelling pencil
    • Patent number 4,603,991
    • Issue date Aug 5, 1986
    • Kotobuki & Co., Ltd.
    • Ken Yamamoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil with automatic and manual lead advance
    • Patent number 4,149,813
    • Issue date Apr 17, 1979
    • A. W. Faber-Castell
    • Otto Katz
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil
    • Patent number 3,998,558
    • Issue date Dec 21, 1976
    • A. W. Faber-Castell
    • Otto Katz
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil
    • Patent number 3,945,733
    • Issue date Mar 23, 1976
    • A.W. Faber-Castell
    • Guenter Edel
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3923405
    • Patent number 3,923,405
    • Issue date Dec 2, 1975
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3922098
    • Patent number 3,922,098
    • Issue date Nov 25, 1975
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3918819
    • Patent number 3,918,819
    • Issue date Nov 11, 1975
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3094102
    • Patent number 3,094,102
    • Issue date Jun 18, 1963
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3001510
    • Patent number 3,001,510
    • Issue date Sep 26, 1961
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2854950
    • Patent number 2,854,950
    • Issue date Oct 7, 1958
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2823644
    • Patent number 2,823,644
    • Issue date Feb 18, 1958
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2726637
    • Patent number 2,726,637
    • Issue date Dec 13, 1955
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2645204
    • Patent number 2,645,204
    • Issue date Jul 14, 1953
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2509006
    • Patent number 2,509,006
    • Issue date May 23, 1950
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2506917
    • Patent number 2,506,917
    • Issue date May 9, 1950
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2505438
    • Patent number 2,505,438
    • Issue date Apr 25, 1950
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2492839
    • Patent number 2,492,839
    • Issue date Dec 27, 1949
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2469411
    • Patent number 2,469,411
    • Issue date May 10, 1949
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2427648
    • Patent number 2,427,648
    • Issue date Sep 16, 1947
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2370250
    • Patent number 2,370,250
    • Issue date Feb 27, 1945
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2349553
    • Patent number 2,349,553
    • Issue date May 23, 1944
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2332258
    • Patent number 2,332,258
    • Issue date Oct 19, 1943
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2303009
    • Patent number 2,303,009
    • Issue date Nov 24, 1942
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2298555
    • Patent number 2,298,555
    • Issue date Oct 13, 1942
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents