Patents by Inventor Frederick Thomas Cogan

Frederick Thomas Cogan 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).

  • Extension cords for plug-in telephones
    Patent number: 4047787
    Abstract: An extension cord for plug-in telephones comprises a line cord having a plug at one end for insertion in a telephone outlet and multi-outlet member on the other end. The multi-outlet member is in the form of a hollow box-like member in the front of which are at least two apertures with a jack aligned with an behind each aperture for insertion of a plug. A back cover is attached to the multi-outlet member and the line cord enters through a slot in the cover. The jacks are wired in parallel to the line cord. A latch can be provided on the plug of the line cord and the aperture can be profiled to provide latch engaging formations.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: September 13, 1977
    Assignee: Northern Telecom Limited
    Inventors: Beverly William Gumb, Gerd Kuhfus, Frederick Thomas Cogan