NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH
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Inventing in the Shadow of the Patent System: Evidence from 19th-Century Patents and Prizes for Technological Innovations

B. Zorina Khan

NBER Working Paper No. 20731
Issued in December 2014

---- Acknowledgments ----

Lee Branstetter, Colleen Chien, Claude Diebolt, Rochelle Dreyfuss, Naomi Lamoreaux, Petra Moser, Adam Mossoff, Tom Nicholas, Alessandro Nuvolari, Patricio SaĆ­z, and Ted Sichelman provided valuable comments. Thanks for outstanding research assistance are due to Brian Amagai, Nathaniel Herz, Brittney Langevin, Storey Morrison, Birgitta Polson, Sherry Richardson, Christine Rutan, Peter Smith, and Anne Tolsma. This research project is in part funded by a grant from the National Science Foundation, and I am also grateful to the Engelberg Center on Innovation Law and Policy at NYU Law School for generous support. Liability for errors is limited to the author. The views expressed herein are those of the author and do not necessarily reflect the views of the National Bureau of Economic Research.

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