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Velcro IP Holdings LLC, [2] [4] [5] trading as Velcro Companies and commonly referred to as Velcro (pronounced / ˈ v ɛ l k r oʊ /), [1] is a British privately held company, founded by Swiss electrical engineer George de Mestral in the 1950s. It is the original manufacturer of hook-and-loop fasteners, which de Mestral invented. [2]
Hook-and-loop fasteners, commonly known as Velcro (a genericized trademark), hook-and-pile fasteners or touch fasteners are versatile fastening devices that allow two surfaces to be repeatedly attached and detached with ease. Invented in the mid-20th century, they are widely used in clothing, accessories, and various industrial and consumer ...
Velcro, the invention for which de Mestral is famous De Mestral first conceptualised hook and loop after returning from a hunting trip with his dog in the Alps in 1941. [ 5 ] [ 6 ] [ 7 ] After removing several of the burdock burrs (seeds) that kept sticking to his clothes and his dog's fur, he became curious as to how it worked.
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The fleet of Vulcan printers can produce eight different floor plans of 3 to 4 bedrooms and 2 to 3 baths. [22] A concrete feeding system known as Magma supplies the Vulcan printer with Icon's developed concrete mix known as Lavacrete, which can adjust for site weather conditions and supply read-to-print concrete automatically. [22]
English: The previous Walmart logo. It has been in use from June 29, 2008 to January 13, 2025. Date: ... 16:38, 3 November 2015: 512 × 124 (44 KB) Benedikt Aron:
The Curta was conceived by Curt Herzstark in the 1930s in Vienna, Austria.By 1938, he had filed a key patent, covering his complemented stepped drum. [3] [4] This single drum replaced the multiple drums, typically around 10 or so, of contemporary calculators, and it enabled not only addition, but subtraction through nines complement math, essentially subtracting by adding.
Following the patent and release of Harold's Long Scale calculator featuring two knobs on the outside rim in 1914, he designed the Magnum Long Scale calculator in 1927. [ 6 ] [ 7 ] As the name "Magnum" implies, it was a fairly large device at 4.5 inches in diameter—about 1.5 inches more than Fowler's average non-Magnum-series calculators. [ 8 ]
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