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The NBER patent citation data file: Lessons, insights and methodological tools

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Universities as a Source of Commercial Technology: A Detailed Analysis of University Patenting, 1965–1988, , and . Review of Economics and Statistics, 80 (1): 119--127 (February 1998)Quality-adjusted prices for the American automobile industry, and . NBER working paper series Nat. Bureau of Economic Research, Cambridge, Mass., (1995)Market value and patent citations, , and . The RAND Journal of Economics, (2005)Patents, citations, and innovations, and . MIT Press, Cambridge, Mass. u.a., (2002)The NBER Patent Citations Data File: Lessons, Insights and Methodological Tools, , and . NBER Work. P., (September 2001)University versus corporate patents: A window on the basicness of invention, , and . Economics of Innovation and New Technology, 5 (1): 19--50 (1997)Geographic localization of knowledge spillovers as evidenced by patent citations, , and . The Quarterly Journal of Economics, 108 (3): 577--598 (August 1993)The NBER patent citation data file: Lessons, insights and methodological tools, , and . NBER working paper 8498, (2001)A time to sow and a time to reap, and . NBER working paper series National Bureau of Economic Research, Cambridge, Mass., (1994)Economic analysis of product innovation. Harvard economic studies Harvard University Press, Cambridge, Mass. u.a., (1990)