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en.wikipedia.org/wiki/Paper_clip

A paper clip (or sometimes paperclip) is a device used to hold sheets of paper together, usually made of steel wire bent to a looped shape (though some are covered in plastic).Most paper clips are variations of the Gem type introduced in the 1890s or earlier, characterized by the almost two full loops made by the wire. Common to paper clips proper is their utilization of torsion and elasticity ...

www.thoughtco.com/history-of-the-paper-clip-4072863

Vaaler was an employee at a local invention office when he created the paperclip. He received an American patent in 1901. The patent abstract says, "It consists of forming same of a spring material, such as a piece of wire, that is bent to a rectangular, triangular, or otherwise shaped hoop, the end parts of which wire piece form members or ...

slate.com/human-interest/2012/05/the-history-of-the-paper-clip-it-was-invented...

The paper clip is something of a fetish object in design circles. Its spare, machined aesthetic and its inexpensive ubiquity landed it a spot in MoMA’s 2004 show Humble Masterpieces.This was a ...

en.wikipedia.org/wiki/Johan_Vaaler

Johan Vaaler (March 15, 1866 – March 14, 1910) was a Norwegian inventor and patent clerk. He has often erroneously been identified with the invention of the common paper clip, known to all office employees for more than a hundred years.He is also the uncle of renowned vacuum designer Arnold Vaaler.

www.whoinventedit.net/who-invented-the-paper-clip.html

William Middlebrook is credited to have invented the paper clip we know today. It's a simple invention that has shined in simplicity and efficiency for over a hundred years. There were others who challenged it but the original design still works well today.

www.officemuseum.com/paper_clips.htm

Early Office Museum History of the Paper Clip Advertisement for the Common-Sense Paper Clip. What counts as a paper clip? For purposes of the discussion and timeline presented here, a paper clip is a flat or nearly flat piece of metal that slides over an edge of a set of papers and holds the papers together without being bent or pinched by the user and without piercing the papers.

didyouknow.org/paperclips

Home » inventions » Who invented the paperclip. Who invented the paperclip. When Johann Vaaler patented his paper clip in 1901, there already were similar designs on the books. William Middlebrook of Waterbury, Connecticut patented his design in 1899. Cornelius Brosnan of Springfield, Massachusetts patented his Konaclip in 1900.

www.bbvaopenmind.com/.../visionaries/great-little-inventions-the-paper-clip

He invented other paper clip, not THE paper clip. Johan Vaaler and his impractical design of a paper clip (1901) Few people may know that the type of paper clip in most widespread use today has its own name: it’s called the ‘Gem’ and it’s the elongated model with parallel sides and two incomplete loops of wire. Curiously enough, it is ...

www.todayifoundout.com/index.php/2011/09/the-paperclip-was-not-invented-by-johan-vaaler

His paperclip had the papers inserted by lifting the outer wire slightly and pushing the papers into the clip such that the rest of the clip stood out from the paper at a 90 degree angle, which was necessary because of the lack of the critical second loop to allow the papers to be more or less embedded in the clip flatly.