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Protecting their intellectual assets : appropriability conditions and why US manufacturing firms patent (or not)
Cohen, Wesley M., (2000)
R&D spillovers, patents and the incentives to innovate in Japan and the United States
Cohen, Wesley M., (2002)
Protecting Their Intellectual Assets : Appropriability Conditions and Why U.S. Manufacturing Firms Patent (or Not)
Cohen, Wesley M., (2021)