Patents by Inventor Robert W. Rufenacht

Robert W. Rufenacht 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).

  • Patent number: 5255462
    Abstract: A sign having variable indicators utilizing a static member in the form of a plate with a first surface and a second opposite surface. First and second slots are also provided along the static member between the first and second surfaces. A removable member having first and second surfaces lies adjacent the static member. The movable member includes indicia indicating direction which is capable of aligning with the first and second slots of the first member when the movable first surface moves adjacent the second surface of the static member. The movable member may be confined to the static member to form a sign unit.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: October 26, 1993
    Inventor: Robert W. Rufenacht