Patents by Inventor Fred J. Evangelista

Fred J. Evangelista 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).

  • Patent number: 4177705
    Abstract: Disclosed is an electronic musical instrument resembling a guitar that is played like a guitar and sounds like a guitar; however, it is stringless and has a plurality of flexible actuator blade type members which are mounted on edge and are adapted to be strummed or picked. Flexing of each actuator blade in either direction closes one or more leaf type switches which controls the amplified output of an electronic oscillator whose fundamental operating frequency is further varied in accordance with finger actuation of a plurality of fret-board switches. Although the invention in its preferred embodiment is directed to a guitar-like instrument, it is also applicable to other types and classes of musical string instruments such as a violin.
    Type: Grant
    Filed: December 28, 1978
    Date of Patent: December 11, 1979
    Inventor: Fred J. Evangelista
  • Patent number: RE31019
    Abstract: Disclosed is an electronic musical instrument resembling a guitar that is played like a guitar and sounds like a guitar; however, it is stringless and has a plurality of flexible actuator blade type members which are mounted on edge and are adapted to be strummed or picked. Flexing of each actuator blade in either direction closes one or more leaf type switches which controls the amplified output of an electronic oscillator whose fundamental operating frequency is further varied in accordance with finger actuation of a plurality of fret-board switches. Although the invention in its preferred embodiment is directed to a guitar-like instrument, it is also applicable to other types and classes of musical string instruments such as a violin.
    Type: Grant
    Filed: June 25, 1980
    Date of Patent: August 31, 1982
    Inventor: Fred J. Evangelista