Abstract: A retainer for maintaining a book in an open position having a retaining element with a U-shaped portion, a clip portion, and a reinforcement portion. The clip portion extends from the U-shaped portion and the reinforcement portion strengthens the intersection of the clip portion with the U-shaped portion. A book is inserted in an open position between the U-shaped portion and the clip portion. The entire retaining element is composed of a resilient, transparent material having a single piece construction. The U-shaped portion has two legs which, together with the clip portion, make contact with the book at three locations.

Abstract: An acoustic fabric-mounting system includes a fabric stretched across a wooden frame of an acoustic panel. Some frame members are fixed to a wall, while other frame members are connected to one or more brackets which allow them to move relative to the fixed members along the wall. A tensioning bracket mounted beneath the panel exerts an expansion force against the movable frame member, tending to move it translationally apart from the fixed frame member, so that the fabric is stretched taut. The tensioning bracket is spring-loaded and adjustable.