US Patent 7120969 Binder clip

A binder clip comprising a first side panel, second side panel and third side panel, integral with one another and arranged in the shape of a triangle, the first and third side panels having curled edge portions, and the first and third side panels spring-biased toward one another, a first and second lever made of wire and forming a loop, the first and second lever pivotally fixed to the first side panel and third side panel, respectively, the first and second levers arranged to pivot. The first and second levers are arranged to be retained or locked by linear protrusions emanating upwardly from the first and third side panels, respectively.