The abstract sorts out the development of chain link fences: in 1844, Barnard and Company in Norwich, England, borrowed local textile machine technology to pioneer the mechanized production of chain link fences; in the mid-1890s, Mafella's company in the United States was awarded a patent for "continuous wire fabric" (the technology was initially used for spring beds); in 1930, his brother improved the design to eliminate dangerous burrs and adapt it to home use. Subsequent patents were updated and the technology became popular worldwide after their expiration. Today, chain link fences have become a commonly used fence because of their durability and economy.
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