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.
Augmented by the action of the vacuum, which initiated the second stage of the brewing process, the result was an elegantly simple system which produced an excellent cup of coffee. The earliest glass vacuum pots appear to have been in use in Germany by the 1830âs, as witnessed by a patent filed in France by Mme. Jeanne Richard in 1838. This patent shows a design which which referenced an existing vacuum pot by Loeff of Berlin.