Patents by Inventor Albert Shubert

Albert Shubert 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).

  • Apparatus for troweling pipe lining material
    Patent number: 3966389
    Abstract: A frusto-conical trowel made up of a plurality of overlapping arcuate leaves includes an inflatable member within the trowel to bear against the leaves and urge them outwardly with a substantially uniform force against coating material being applied to the inside surface of a pipe.
    Type: Grant
    Filed: December 27, 1972
    Date of Patent: June 29, 1976
    Assignee: Ameron, Inc.
    Inventor: Albert Shubert