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12 Classic Gadgets You Can Still Buy 2


Edison Screw

First introduced: 1909

While it sounds like an excellent band name, or perhaps a dubious cocktail, the Edison Screw, first introduced 100 years ago, refers to the standardized threading found in lighting fixtures (and the companion screw cap found on virtually all consumer light bulbs). At the turn of the century, the spread of household electricity and electric lighting brought a bewildering array of proprietary light-bulb and socket sizes from competing manufacturers. In an attempt to reassure customers and boost sales, General Electric Edison (yes, that Edison) hit upon the idea of standardizing everything, and did so under a massive marketing campaign with its new line of Mazda lightbulbs (in fact, GE still owns the trademark to that name, which came from the Persian word for god). The plan worked after other manufacturers quickly adopted those standards (and paid licensing fees, naturally), and nearly 100 years later, we still bask in the warm glow of E26 light bulbs.

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