Patents by Inventor Malcolm Withnall

Malcolm Withnall 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).

  • Communication units
    Patent number: 4100379
    Abstract: The invention is concerned with the interconnection of communications units such as telephones, microphones and loudspeakers. According to the invention a connecting plate extends between the undersurfaces of adjacent units and locates the units in the desired spatial relationship. Jointing means then detachably connect the unit to the plate.
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: July 11, 1978
    Assignee: The Post Office
    Inventors: David Carter, Malcolm Withnall, Alan Williams, Digby Ralph Redshaw, Richard William Stevens