Patents by Inventor Louis Clifford Maurer

Louis Clifford Maurer 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).

  • Electronic channel selecting system for a quad-stereo tape player
    Patent number: 4003089
    Abstract: A two-four channel tape player having a single eight-track tape head or a pair of fixed position tape heads, each head having four pickups, and each pickup aligned with a track on the tape. The pickups connect to voltage controlled amplifiers which are controlled by logic circuitry. The logic circuitry is programmed to select either two channel or four channel program material and is further programmed to sequence to other tape programs in response to a sequence command. Further signal processing is accomplished in output matrixing circuitry which is also logic circuitry controlled.
    Type: Grant
    Filed: December 31, 1974
    Date of Patent: January 11, 1977
    Assignee: Motorola, Inc.
    Inventor: Louis Clifford Maurer