Patents by Inventor Andre M. Polack

Andre M. Polack 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).

  • Three-dimensional construction element comprising a body of generally polyhedral form
    Patent number: 4159602
    Abstract: A three-dimensional construction element comprising a body of generally polyhedral form with an aperture therethrough. Said element comprises at least one peripheral rib forming a statically indeterminate frame the neutral axis of which is located in a plane parallel to the planes defining the ends of the element having the aperture therethrough, and in that the grooves located beside the rib form, separately or together, a geometric figure which is complementary to the figure formed by the rib. (FIG. 1).
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: July 3, 1979
    Assignee: Matrapa S.A.
    Inventor: Andre M. Polack