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US Patent 8864922 Method for manufacturing a precipitation-hardening cold-rolled steel sheet having excellent yield ratios

Patent 8864922 was granted and assigned to POSCO on October, 2014 by the United States Patent and Trademark Office.

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Patent Inventor Names

Sang-Ho Han0

Date of Patent

October 21, 2014

Patent Application Number

137829870

Date Filed

March 1, 2013

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