A sign for workplaces and a method for its use. The preferred embodiment comprises a rectangular board retained by extendable brackets on the wall of a cubicle or the door of an office. Alternatively, the board may be retained on a wall, door or other surface by strips of hook and loop fasteners, glue,...http://www.google.de/patents/US7146758?utm_source=gb-gplus-sharePatent US7146758 - Sign indicating status of occupant of cubicle or office and method of use
