Patents by Inventor Alan Douglas Smith

Alan Douglas Smith 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).

  • Line level microphone with built in limiter
    Patent number: 4000370
    Abstract: A line level microphone. The microphone includes an amplifier and a peak limiter variably shunting the input of the amplifier to substantially avoid distortion or clipping of the microphone output signal.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: December 28, 1976
    Assignee: Shure Brothers Incorporated
    Inventors: Alan Douglas Smith, David Alan Yoshinari