Patents by Inventor Hugh A. C. Goldschmidt

Hugh A. C. Goldschmidt 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).

  • Audio system for drive-in theaters
    Patent number: 4307466
    Abstract: A drive-in theater having an array of predesignated parking spaces and a central audio output device for generating a carrierless audio signal. Interface devices are located at the spaces and connected in parallel to the output device. Each interface device includes an oscillator that generates a carrier signal and modulates the carrier signal in accordance with the audio input so that the modulated carrier signal can be transferred to the radio antenna of an individual automobile.
    Type: Grant
    Filed: January 15, 1980
    Date of Patent: December 22, 1981
    Inventor: Hugh A. C. Goldschmidt