Patents by Inventor Lawrence J. Kaderabek

Lawrence J. Kaderabek 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 for hydraulic lift of reinforced concrete
    Patent number: 4261548
    Abstract: A hydraulic jack provided for raising, leveling, and moving steel reinforced concrete. A hole is drilled vertically in the concrete to be lifted, and two wedges, a tapered and a straight wedge are lowered into the aperture in vertical contact. The tapered wedge is lowered into the hole first to protrude under the perifery of the round aperture and the straight wedge run down on the face opposite to the wedge.
    Type: Grant
    Filed: September 26, 1977
    Date of Patent: April 14, 1981
    Inventor: Lawrence J. Kaderabek