Patents by Inventor Mark E. Dobbeck

Mark E. Dobbeck 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).

  • Ductwork alignment tool
    Patent number: 5594982
    Abstract: A hand tool for aligning misaligned adjacent ductwork sections having return flange terminations is provided with a sheet metal base area having integrally formed side flanges and an integral V-shaped notch element which functions to align the ductwork sections for subsequent installation of a flanged cleat interconnection when the hand tool is advanced manually to its final position.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: January 21, 1997
    Inventor: Mark E. Dobbeck