Patents by Inventor Friedhelm Maurer

Friedhelm 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).

  • Recording disk cover and player apparatus for removing cover
    Patent number: 4274119
    Abstract: A cover for a video record has a generally unbroken rectangular perimeter. A record player has permanent magnets that cooperate with paramagnetic inserts in the record cover to open the cover for loading and unloading a recording disk. The player has a clamp mechanism that enters the opened cover to clamp the disk for these operations.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: June 16, 1981
    Assignee: Discovision Associates
    Inventors: Curtis E. Hayward, Friedhelm Maurer