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Patent Classification Systems

For effective performance of patent-related searches following classification systems are used:

IPC - International Patent Classification (WIPO)
http://www.wipo.int/classifications/ipc/ipc8/?lang=en

The European Classification system - ECLA (EPO)
http://v3.espacenet.com/eclasrch?locale=en_ep

U.S. Patent Classification System
http://www.uspto.gov/web/patents/classification/

FI Classification, F-term (Japan)
http://search.p4.patolis.co.jp/search_en.html

United Kingdom Classification (UKC)
http://www.ipo.gov.uk/p-class-ukc.htm


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