Patents by Inventor Frederick R. Wittnebert

Frederick R. Wittnebert 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).

  • Fountain pen
    Patent number: 3957379
    Abstract: A fountain pen comprising a multipurpose writing nib having a contoured paper contacting portion or pellet attached to a forward portion thereof and two opposed, generally flat faces, each face being distinctly supported against flexure for providing variations in writing line breadth from using one or the other face of the nib against a writing surface.
    Type: Grant
    Filed: April 4, 1975
    Date of Patent: May 18, 1976
    Assignee: The Parker Pen Company
    Inventor: Frederick R. Wittnebert
  • Modular writing pen
    Patent number: 3951555
    Abstract: A writing pen which comprises a vacuum controlled reservoir for containing a supply of ink having a lower viscosity than conventional ball pen ink, a writing tip which may be any one of a number of interchangeable types and a finned collector including a weir and feed which are arranged to induce capillary flow of the ink from the reservoir to the tip for writing purposes.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: April 20, 1976
    Assignee: The Parker Pen Company
    Inventors: Frederick R. Wittnebert, Francis J. Meinhardt, Joseph R. Branks, Gerald C. Herold, Daniel P. Stambaugh
  • Fountain pen
    Patent number: D243014
    Type: Grant
    Filed: June 17, 1974
    Date of Patent: January 11, 1977
    Assignee: The Parker Pen Company
    Inventor: Frederick R. Wittnebert