Patents by Inventor Ivor J. M. Fehr

Ivor J. M. Fehr 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).

  • Writing instrument having plural nibs with one being retractable
    Patent number: 4580918
    Abstract: A writing instrument comprising a plurality of coaxial writing nibs and means for advancing and retracting the nibs relative to one another to adjust a selected nib into an operative writing position, whereby the instrument is adjustable to produce lines of different predetermined widths.
    Type: Grant
    Filed: March 15, 1983
    Date of Patent: April 8, 1986
    Assignee: The Gillette Company
    Inventors: Hugh William B. Baker, Ivor J. M. Fehr
  • Writing instrument with nib operated valve
    Patent number: 4547090
    Abstract: A reservoir pen in which flow of ink from a reservoir to a nib is controlled by a valve which is actuated by the deflection of the nib during use.
    Type: Grant
    Filed: March 15, 1983
    Date of Patent: October 15, 1985
    Assignee: The Gillette Company
    Inventors: Hugh W. B. Baker, Valerie A. Buckle, Ivor J. M. Fehr