Patents by Inventor Cathy S. Perka

Cathy S. Perka 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).

  • Workstation signal device
    Patent number: 6014942
    Abstract: A signal device including a plurality of visually different flags in a mounting frame is secured to the top of a cubicle wall forming a part of a workstation, so that the status of the workstation user can be visually determined. The flags are normally in a generally horizontal position in the mounting frame, and may be in a recess in the top of the cubicle wall. A flag corresponding to the desired message is raised from the mounting frame, so that the flag is visible above the top of the cubicle wall.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: January 18, 2000
    Inventors: Alan T. Perka, Cathy S. Perka