Patents by Inventor Charles A. Stockholm

Charles A. Stockholm 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).

  • Patent number: 4133115
    Abstract: A multiple vial universal flange level assembly for leveling and squaring the flange of a pipe section having a preassembled or subsequently assembled flanged end, including an elongated bar-like main frame having first and second bubble vials oriented to indicate when the main frame is oriented horizontally both transverse and parallel to the pipe section axis and third and fourth bubble vials for indicating when the main frame longitudinal axis is in a vertical plane when non-horizontal, together with first and second pairs of centering cones and a pair of associated rods insertable into apertures of the flange for removably assembling the main frame onto the flange.
    Type: Grant
    Filed: November 3, 1977
    Date of Patent: January 9, 1979
    Inventor: Charles A. Stockholm