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On the citation of patents: a new standard

Book ID
103621545
Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
91 KB
Volume
3
Category
Article
ISSN
0172-2190

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## Abstract Previous research studies the age profile of patent citations to learn about knowledge flows over time. However, identification is problematic because of the collinearity between application year, citation year, and patent age. We show empirically that a patent's β€˜citation clock’ does n