The turn of the last century saw a boon in paper clip technology. A wide variety of styles and sizes of clips were invented, but only a few survived. Tools to Liveby has selected six of the most popular and practical shapes to bring into the 21st century.
Weis Binder Co. launched this triangular paper clip in 1903 and the patent was awarded in 1904. The isosceles triangle design makes the clip super simple and convenient to handle. It has one raised tip that makes it easy to attach to your papers, while creating a gap between groups of documents when they are stacked.