Patents and Innovation: An Empirical Study Edwin Mansfield Management Science, Vol. 32, No. 2. (Feb.

Patents and Innovation: An Empirical Study Edwin Mansfield Management Science, Vol. 32, No. 2. (Feb.

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日期:2025-07-08
Patents and Innovation: An Empirical Study Edwin Mansfield Management Science, Vol. 32, No. 2. (Feb., 19 ......看更多