Technological Opportunity and Spillovers of R&D: Evidence from Firms' Patents, Profits and Market Value
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This paper presents evidence that firms' patents, profits and market value are systematically related to the"technological position" of firms' research programs. Further, firms are seen to "move" in technology space in response to the pattern of contemporaneous profits at different positions. These
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美国国家经济研究局创建时间：
1986-01-01
