
Study on Measurement Methods of Stock Ratio and Failure Rate for Patents in Force
Zhang Xian, Xu Haiyun, Fang Shu, Liu Chunjiang, Zeng Rongqiang
Library and Information Service ›› 2014, Vol. 58 ›› Issue (13) : 90-94,74.
Study on Measurement Methods of Stock Ratio and Failure Rate for Patents in Force
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