Patent Laws and Innovation: Evidence from Economic History
NBER Working Paper No. 18631
---- Acknowledgements -----
I wish to thank David Autor, Eric Hilt, Ryan Lampe, Stephanie Lee, Xing Li, Joel Mokyr, Hoan Nguyen, John List, Paul Rhode, Chang-Tai Hseih, Carlos Serrano, Timothy Taylor, Joel Watson, and Gavin Wright for helpful suggestions, and the National Science Foundation for support through NSF Grant SES0921859 and CAREER Grant 1151180. The views expressed herein are those of the author and do not necessarily reflect the views of the National Bureau of Economic Research.