Importance

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Abstract

A screw fastener clamp which can be securely mounted at selected locations along a shelf or similar structure includes a screw fastener, a rachet latch, a body member containing a slot for receiving the shelf, and a retaining portion for supporting such items as book stops, lamps and sign holders. Latch release means and means to prevent unauthorized use of said latch release means are disclosed, as is a separate retaining member positioned between the body portion and the shelf which allows the use of separate body member and retainer components and thus allowing these parts to be interchanged as desired for specific applications. Also disclosed is a screw fastener clamp having retaining means fastened to the screw fastener stud such that rotating said retaining means tightens the grip of said clamp on the shelf.

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First Claim