Uncovering GPTS with patent data
By: Bronwyn H. Hall, Manuel Trajtenberg.
Contributors: Trajtenberg, Manuel.; National Bureau of Economic Research.
Series: NBER working paper series -- no. 10901.; Working paper series (National Bureau of Economic Research) -- working paper no. 10901.
Publisher: National Bureau of Economic Research
Published: 2004
Place of publication: Cambridge, Mass
Language: eng
Number of pages: 27
Subjects: Technological innovations -- United States -- History -- 20th century; Patents -- United States
Other titles: Uncovering General Purpose Technologies with patent data.
Notes: "November 2004."

Includes bibliographical references (p. 21-24).

Also available in PDF from the NBER world wide web site (www.nber.org).