Patents by Inventor Robert Ruf

Robert Ruf 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).

  • Roller type massaging apparatus for the feet
    Patent number: 4167940
    Abstract: A series of rollers held in a frame and covered with a textured, granular surface, simulating natural granular terrain.
    Type: Grant
    Filed: August 4, 1977
    Date of Patent: September 18, 1979
    Assignee: Ruf Handels AG
    Inventor: Robert Ruf