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First Handheld Calculator

The first scientific pocket calculator hit the market in 1972. It was the HP 35. It got its name for its 35 keys. At $395 it was a bestseller with a million units sold in the first year.

The Non-Stick Wonder

You probably know Teflon best for its seemingly magical ability of keeping food unstuck from ... more

Etch-A-Sketch Arrival

It’s meant to mimic a mini TV set with two white knobs on a signature red plastic frame. The ... more

Killer Couple

Their inevitable demise came on May 23, 1934, in a deadly ambush down a Louisiana state highway; ... more
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