Innovation fertility and patent design
By: Hugo A. Hopenhayn, Matthew F. Mitchell.
Contributors: Mitchell, Matthew F., 1972-; National Bureau of Economic Research.
Series: NBER working paper series -- working paper 7070; Working paper series (National Bureau of Economic Research) -- working paper no. 7070.
Publisher: National Bureau of Economic Research
Published: 1999
Place of publication: Cambridge, MA
Language: eng
Number of pages: 34
Subjects: Patent laws and legislation -- Economic aspects -- United States -- Mathematical models.; Technological innovations -- Economic aspects -- United States -- Mathematical models.
Notes: "April 1999."

Includes bibliographical references (p. 32).

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