Historical references have described the act of fastening papers together for at least 8 centuries, but the paper clip was not invented until 1899.
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The history of the paper clip: It was invented in 1899. It hasn't been improved upon since.
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The history of the paper clip: It was invented in 1899. It hasn't been improved upon since.
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Object Lessons: The Surprisingly Complex History of the Humble Paper Clip - Remodelista