Patents by Inventor Fritz Freudlsperger

Fritz Freudlsperger 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).

  • Device to raise and lower box-shaped construction elements, in particular prefabricated garages
    Patent number: 3985237
    Abstract: A device to raise and lower box-shaped construction elements with the elements having at least three openings in the floor; the device including lifting cylinders designed to pass through the openings, a lifting plate mounted perpendicular to the cylinder walls and an inclined plate designed to support the construction elements.
    Type: Grant
    Filed: April 18, 1975
    Date of Patent: October 12, 1976
    Inventor: Fritz Freudlsperger