Patents by Inventor Ian D. Buchanan

Ian D. Buchanan 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).

  • Shutter mechanism for telephone directory
    Patent number: 4947424
    Abstract: A shutter mechanism for a telephone directory that stores telephone numbers to be dialed. The directory has physical spaces for the entry of descriptive labels (e.g. names). The shutter mechanism has a first planar surface for providing these physical spaces. It has a second planar surface overlying the first surface. The second surface is divided into alternating opaque and transparent sections such that the surface having the names can be moved underneath the second surface such that the names can be hidden by the opaque sections or revealed by the transparent sections.
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: August 7, 1990
    Assignee: Northern Telecom Limited
    Inventors: Gad J. Shaanan, George V. Lenaerts, Ian D. Buchanan, Anthony M. Smith
  • Base for a telephone set or similar article
    Patent number: D328072
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: July 21, 1992
    Assignee: Northern Telecom Limited
    Inventors: Ian D. Buchanan, George V. Lenaerts