Patents by Inventor Leo A. Frankowski

Leo A. Frankowski 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).

  • Method for making a thin-walled object
    Patent number: 4262059
    Abstract: A method for forming a thin-walled object having a thin reinforcing sheet so perforated as to be deformable into a surface having a selected curvature, the reinforcing sheet being embedded in a plastic material that is hardened to form a surface corresponding to the curvature of the reinforcing sheet.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: April 14, 1981
    Inventor: Leo A. Frankowski