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.
The modern Electrolux canister vacuum offers an electrically driven power nozzle. This feature was first introduced in 1957 with the model S which used a pigtail cord at each end of the hose to bring electricity from the body of the machine to the beater bar.ince the 1920s, the Electrolux name has conveyed high quality and superior performance. Though the appearance has evolved throughout the years, this quality has remained the same. The earliest machine introduced was the Model V which came out in 1924.