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Black & Decker was tasked with the job, and developed a computer program to optimize the design of the drill's motor and ensure minimal power consumption. That computer program led to the development of a cordless miniature vacuum cleaner. [3] The Mod 4 series was introduced in 1974 but was generally not successful in the marketplace.
1910 – "The Black & Decker Manufacturing Company" was founded by S. Duncan Black (1883–1951) and Alonzo G. Decker (1884–1956) as a small machine shop in Baltimore in September. Decker, who had only a seventh grade education, had met Black in 1906, when they were both 23-year-old workers at the Rowland Telegraph Company.
In 1930, the company name was changed to Ray-O-Vac, an allusion to the then-new technology of vacuum tubes and electron rays. In 1933, the company patented the first wearable vacuum tube hearing aid. [8] During World War II, Rayovac supplied the United States military with nearly 500 million batteries.
Portable vacuum cleaners working on the cyclonic separation principle became popular in the 1990s. This dirt separation principle was well known and often used in central vacuum systems. Cleveland's P.A. Geier Company had obtained a patent on a cyclonic vacuum cleaner as early as 1928, which was later sold to Health-Mor in 1939, introducing the ...
Stanley Black & Decker, Inc., formerly known as The Stanley Works, is a Fortune 500 American manufacturer of industrial tools and household hardware, and a provider of security products. Headquartered in the Greater Hartford city of New Britain, Connecticut , [ 3 ] Stanley Black & Decker is the result of the merger of The Stanley Works and ...
United Nations: the recognisable blue helmets of the peacekeeping operations and the flags of associated UN agencies like the World Health Organization, with the UN's light blue and white. European Union : the blue and yellow of the EU flag ; uses include the blue European Health Insurance Card and the Blue Card for skilled immigration.
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