Patents by Inventor Thomas P. Colangelo

Thomas P. Colangelo 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).

  • Ribbon loudspeaker
    Patent number: 4395592
    Abstract: A ribbon loudspeaker is suitable for incorporation into a sound reproduction system without additionally requiring a transformer or series resistor. In one form in which the loudspeaker is bi-directional, a sound reproduction ribbon is received in a pair of magnetic gaps formed from a magnetic system employing a single magnet.
    Type: Grant
    Filed: March 6, 1981
    Date of Patent: July 26, 1983
    Assignee: Mark Levinson Audio Systems Ltd.
    Inventor: Thomas P. Colangelo