Patents by Inventor Richard R. Castor

Richard R. Castor 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).

  • Apparatus for audio visual presentation of music
    Patent number: 4097135
    Abstract: An audio-visual apparatus is disclosed which includes a projection screen having indicia thereon representative of a note play marker, means for successively projecting onto the screen adjacent the note play marker a plurality of visual images of a musical composition recorded on a film strip, means for providing a sound recording of the musical composition and control means for relating the projection of the visual images with the playing of the sound recording.
    Type: Grant
    Filed: January 12, 1977
    Date of Patent: June 27, 1978
    Inventor: Richard R. Castor