The checkered history of powered toothbrushes reveals how batteries wrought a tremendous sacrifice of power and imagination for the sake of size and profit. Let us stumble down memory lane.
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PUH-LEEZE!
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A Cleveland, Ohio entrepreneur, Silesius Horvak, commissioned Allis-Chalmers to construct one of the world’s largest steam engines as the power source for the Steam-O-Dent Oral De-Tartarizator. […]
Posted in Business, Nuclear Issues, Great Britain, Environment, USA, Personal Products, Automobiles, Science, NASA, Industrial Design, Industry, Dental Hygiene, Battery, Cosmology, U.S. Navy, Aircraft, Public Works Projects, Steam Engines |
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Thanks to deBeers and cannot find bearing source. Maybe Timken Roller Bearing
Posted in Advertising, Africa, Industry, Holland |
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