PDF(453 KB)
Patent Analysis and Research on Secure Communication——Based on Data Retrieved from Derwent Innovation Index
Jiang Nan-Yu
Library and Information Service ›› 2009, Vol. 53 ›› Issue (08) : 67-71.
PDF(453 KB)
PDF(453 KB)
Patent Analysis and Research on Secure Communication——Based on Data Retrieved from Derwent Innovation Index
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