Patents by Inventor Michael D. Schaffer

Michael D. Schaffer 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).

  • Hanger bracket
    Patent number: 5039039
    Abstract: Presented is a generally L-shaped pre-manufactured bracket designed for application to installed hanger rods in concrete buildings to provide a means of installing and supporting a cross-beam which, in turn, is utilized to support additional equipment, such as electrical conduits and pipes.
    Type: Grant
    Filed: January 4, 1990
    Date of Patent: August 13, 1991
    Inventor: Michael D. Schaffer