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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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Paper clip,Paper clip inventors | edubilla.com
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Lancaster City Museum - Today is International Paperclip Day! Did you know the humble paperclip was invented in 1899 by Norwegian inventor Johan Vaaler? Or was it American Samuel B. Fay in
Paper Clips
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Paper clip - Wikipedia
The history of the paper clip: It was invented in 1899. It hasn't been improved upon since.
Johan Vaaler - Wikipedia
Paper clip - Wikipedia
How paper clip is made - material, manufacture, making, history, used, product, industry, machine, History
Great Little Inventions: the Paper Clip | OpenMind