Patents by Inventor Wilhelm Winter

Wilhelm Winter 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).

  • Mold for concrete test cube
    Patent number: 4047690
    Abstract: A mold for concrete test cubes of plastic-like material having a vertically extending enclosure and, about midway, radially projecting impact ledges and at the top of the enclosure vertical spacers in the form of legs or extensions of wall panels.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: September 13, 1977
    Assignee: FORM-PLAST GmbH
    Inventors: Wilhelm Winter, Artur Held