On this day in 1921, Clarence C. Collette was granted the patent for Paper Clip, U.S. Patent No. 1,378,525.
This invention has for its object to produce a means for securing plurality of sheets together, commonly known as a paper clip wherein are formed sharply pointed projections for penetrating and engaging the sheet material, such as paper, to prevent removal of the clip or the separation of one or more of the sheets from the clip. In this invention the projecting points are located on the opposite sides of a bent clip having its parts preferably located in the same plane, it being particularly adaptable to a clip which is of the form of a flattened oblong spiral well known in the stationary arts.
