Patents by Inventor Leonard Rubenstein

Leonard Rubenstein 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).

  • Sound recording and reproducing machines
    Patent number: 4006312
    Abstract: A sound recording and reproducing machine in which information is recorded in an endless recording medium in a series of tracks which extend lengthwise of the medium at locations mutually spaced in a direction laterally of the medium. When a plurality of electrical signals, each representing information, are applied to the machine the tracks are formed in a predetermined sequence. When a predetermined command signal is applied to the machine recorded information is reproduced from the tracks in the reverse order from the order in which the tracks were formed.
    Type: Grant
    Filed: January 8, 1975
    Date of Patent: February 1, 1977
    Inventors: Leonard Rubenstein, Stephen Perrin Robinson