A book holder in the form of an elongate panel composed of a light, durable material, such as plastic, including a base portion and a U-shaped end at each of the opposite sides thereof. The U-shaped ends are dimensioned so as to provide an overhang for trapping the pages of a book between the overhang...http://www.google.com/patents/US5246251?utm_source=gb-gplus-sharePatent US5246251 - Book holder