Tabs
Ever wonder where tabs came from? You know, the little pieces of paper that protrudes from file folders, index cards and the like? Technology Review has a brief history on the tab. It's an invention that's been around for sometime -- hundreds of years in fact, but it fell out of favour with the introduction of page numbering of books. Its modern discovery was made by James Newton Gunn, who received a patent for his invention in 1897 and promptly sold it to the US Library Bureau. Today, tabs live on -- in digital format in the many applications you use everyday.
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