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ArcelorMittal sues AK Steel over cold rolled patent
Published on Wed, 17 Apr 2013 768 times viewed

ArcelorMittal USA LLC, part of the world’s biggest steelmaker, sued a unit of AK Steel Holding Corp for infringing a patent for automotive quality cold rolled sheet steel.

The US arm of Luxembourg based ArcelorMittal contends West Chester, O........more

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