Gun Patents, Idenix-Gilead, Amazon: Intellectual Property

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Dec. 3 (Bloomberg) -- Gunmakers such as Smith & WessonHolding Corp. and Sturm Ruger & Co. are boosting firearms salesby building weapons that are more accurate and easier to use,with gun-related U.S. patents at a 35-year high.

Demand is growing as more states allow people to carryconcealed weapons and lawmakers discuss limiting sales aftermass shootings at public venues like schools and movie theaters.Ownership is rising among women and the elderly, Bloomberg Newsreports.