The History and Invention of the Paperclip
Historical references have described the act of fastening papers together for at least 8 centuries, but the paper clip was not invented until 1899.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 Invention of a Paper Clip by Sahithi M. on Prezi Next
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Perfection of the Paper Clip Curious Tales of Invention & Accidental Genius HC 9781476799872
Paper Clips
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The history of the paper clip: It was invented in 1899. It hasn't been improved upon since.
Johan Vaaler – The Original Mr Clippy
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Who Really Invented the Paperclip