On May 2, 1972, Adelard L. Aubin, Jr., was granted the patent for Wall Mounted Combination Chalkboard, Projector Screen and Information Display Apparatus. U.S. Patent No. 3,659,355.
An upright wall supported receptacle having a compound back wall including a chalkboard, an oppositely disposed open front side, a projector screen supported on the receptacle and being selectively movable into and out of confronting juxtaposition relative to the chalkboard, and wing extensions comprising tack boards pivotally connected on the receptacle for swinging movement toward one another to close the open side of the receptacle.
