152,645 Contributions. 1  This circuit is used in most electronic digital computers ever built & was invented in 1918 (patent GB148582). 2  Time is power of Business. 3  This circuit is used in most electronic digital computers ever built & was invented in 1918 (patent GB148582).
There were many people who had a hand in âinventingâ the vacuum cleaner. Every invention and patent has made minor improvements and has evolved into what we use today. Many people are under the assumption that H. Cecil Booth, a British engineer, was the first person to patent the vacuum cleaner in 1901.[1] The first person to patent a version of the vacuum cleaner is Daniel Hess, from West Union, Iowa, in 1860.
Using the income from the Japanese licence, James Dyson set up Dyson Appliances Ltd. in 1991. The first dual-cyclone vacuum built under the Dyson name, the DA 001, was produced by American company Phillips Plastics in a facility in Wrexham, Wales beginning in January, 1993 and sold for about Â£200.