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An electric toothbrush, motorized toothbrush, or battery-powered toothbrush is a toothbrush that makes rapid automatic bristle motions, either back-and-forth oscillation or rotation-oscillation (where the brush head alternates clockwise and counterclockwise rotation), in order to clean teeth.
The company opened a factory in Shanghai, China with 600 workers in the early 20th century to manufacture brush bristles to send to the Florence location for final production. [3] Makers of a highly advertised Pro-phy-lac-tic toothbrush , [ 4 ] the company was acquired by the Lambert Pharmaceutical Co. on February 19, 1930. [ 5 ]
Rotarix vaccine for oral administration. Rotarix is a monovalent, human, live attenuated rotavirus vaccine containing one rotavirus strain of G1P[8] specificity.Rotarix is indicated for the prevention of rotavirus gastroenteritis caused by G1 and non-G1 types (G3, G4, and G9) when administered as a 2-dose series in infants and children. [19]
The Chevrolet Corvette (C1) is the first generation of the Corvette sports car produced by Chevrolet. It was introduced late in the 1953 model year and produced through 1962. [ 4 ] This generation is commonly referred to as the "solid-axle" generation, as the independent rear suspension did not appear until the 1963 Sting Ray.
ProCare membership also included personalized setup of new machines, a yearly 'tune-up' and 'backup consultation'. ProCare previously included individualized training and instruction on a variety of topics relating to Apple computers and software, but as of May 2, 2007, this was spun off as a separate training service called One to One .
In the 1890s, electric bicycles were documented within various U.S. patents. For example, on 31 December 1895, Ogden Bolton Jr. was granted a patent for a battery-powered bicycle with "6-pole brush-and-commutator direct current (DC) hub motor mounted in the rear wheel" (U.S. patent 552,271).
A non-return valve in the air supply line to the helmet failing (or absent on the earliest models of this type of diving suit), accompanied by a failure of the air compressor (on the surface) to pump enough air into the suit for the gas pressure inside the suit to remain equal to the outside pressure of the water, or a burst air supply hose.
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