Time in purgatory : determinants of the grant lag for U.S. patent applications
David Popp, Ted Juhl, Daniel K.N. Johnson
Bok Engelsk 2003
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Utgitt | Cambridge, Mass. : National Bureau of Economic Research , 2003
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Omfang | 48 s. : fig.
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Utgitt | Cambridge, Mass. : National Bureau of Economic Research , 2003
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Omfang | 48 s. : fig.
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