Patents by Inventor Robertson Marquardt

Robertson Marquardt 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).

  • Hair styling apparatus
    Patent number: 8544476
    Abstract: In the specification and drawings a hair styling apparatus is described and shown with a first barrel half, a second barrel half, and a handle, the handle being releasably attached to the first barrel half and releasably attached to the second barrel half.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: October 1, 2013
    Inventors: Christa Marquardt, Robertson Marquardt