Patents by Inventor Rudolf Gerstl

Rudolf Gerstl 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).

  • Brickmaking press
    Patent number: 4137026
    Abstract: A brickmaking press comprises a segmental ring, a brick shaping mold supported by the segmental ring in the mold cavity defined thereby, a clamping ring surrounding and enclosing the segmental ring, and the clamping and segmental rings defining an annular chamber maintained under fluid pressure.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: January 30, 1979
    Assignees: Veitscher Magnesitwerke-Actien-Gesellschaft, Oesterreichisch-Amerikanische Magnesit Aktiengesellschaft
    Inventor: Rudolf Gerstl