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*The "original" 1963-1999 release of the patent data, with citations from 1975-1999, is available from the [http://www.nber.org/patents/ NBER website]
*The 1963-2002 update, with citations from 1975, to the NBER patent data is available from [http://elsa.berkeley.edu/~bhhall/patents.html Bronwyn Hall's patent pages]
*The 1963-2006 update is available from the [https://sites.google.com/site/patentdataproject/Home Patent Data Project (PDP)] homepage, as is an enhanced COMPUSTAT assignee match table. Citations datafor 1975-2006, and the issue data, are is available from [http://elsa.berkeley.edu/~bhhall/NBER06.html Bronwyn Hall's 2006 update page].
*A 2008 release is currently planned by [http://people.bu.edu/cockburn/ Iain Cockburn]
