PDF(758 KB)
Analysis on the Chinese patents in USPTO
zhongkai yang [英]LIANG Yong-Xia [中]梁永霞 LIU Ze-Yuan LIU
Library and Information Service ›› 2009, Vol. 53 ›› Issue (02) : 42-42.
PDF(758 KB)
PDF(758 KB)
Analysis on the Chinese patents in USPTO
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