Patents by Inventor Gunther Babel

Gunther Babel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Mechanical pencil
    Patent number: 4352581
    Abstract: A mechanical pencil of the type having a push-button lead-feeding mechanism is provided with a space into which a replaceable cartridge containing leads can be inserted. The cartridge has a lead outlet opening which is blocked by a closure that is moved out of the way upon such insertion so that the leads can thereupon move sequentially into the lead-feeding mechanism, permitting a user to write until all leads in the cartridge are used up.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: October 5, 1982
    Assignee: A. W. Faber-Castell
    Inventors: Werner Leuthold, Svatopluk Krumnikl, Gunther Babel
  • Mechanical pencil
    Patent number: 4247215
    Abstract: A mechanical pencil of the type having a pushbutton lead-feeding mechanism is provided with a space into which a replaceable cartridge containing leads can be inserted. The cartridge has a lead outlet opening which is blocked by a closure that is moved out of the way upon such insertion so that the leads can thereupon move sequentially into the lead-feeding mechanism, permitting a user to write until all leads in the cartridge are used up.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: January 27, 1981
    Assignee: A. W. Faber-Castell
    Inventors: Werner Leuthold, Svatopluk Krumnikl, Gunther Babel