NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

The Rate of Obsolescence of Patents, Research Gestation Lags, and the Private Rate of Return to Research Resources

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Ariel Pakes, Mark Schankerman

Chapter in NBER book R & D, Patents, and Productivity (1984), Zvi Griliches, ed. (p. 73 - 88)*
Published in 1984

This chapter first appeared as NBER working paper w0346, The Rate of Obsolescence Of Knowledge, Research Gestation Lags, and the Private Rate of Return to Research Resources, Ariel Pakes, Mark Schankerman

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