Patents by Inventor Alan M Tattersall

Alan M Tattersall 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).

  • Speaker enclosure
    Patent number: 4635749
    Abstract: A loudspeaker horn having side wall members which converge to a throat and then diverge at a controlled horizontal dispersion angle allows horizontal dispersion from a bass driver to be maintained up to 4 KHz, permitting higher crossover frequencies and therefore use with lighter and more responsive high frequency units.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: January 13, 1987
    Inventor: Alan M Tattersall