| 词条 | European Classification |
| 释义 |
The European Classification (ECLA[1]) is a former patent classification system maintained by the European Patent Office (EPO). The ECLA classification system contains 134 000 subdivisions. It is mainly an extension of the International Patent Classification system, but sometimes modifies its titles and rules. ECLA is used in connection with the indexing system ICO, which serves to identify additional information and aspects that are not covered by the ECLA schemes.[2] ECLA has been replaced by the Cooperative Patent Classification (CPC) as of 1 January 2013. See also
Notes and references1. ^"ECLA" stands for European Classification. See for example: {{cite journal |last1=Stock |first1=Mechtild |last2=Stock |first2=Wolfgang G. |year=2006 |title=Intellectual Property Information: A Comparative Analysis of Main Information Providers |journal=Journal of the American Society for Information Science and Technology (JASIST) |volume=57 |issue=13 |pages=1794–1803 |publisher=Wiley Periodicals, Inc. |doi=10.1002/asi.20498 |url=http://www.phil-fak.uni-duesseldorf.de/fileadmin/Redaktion/Institute/Informationswissenschaft/1195739509stock_jasi.pdf |quote=The European Classification (ECLA) system used by the European Patent Office represents a downward expansion of the IPC system by including over 70,000 subclasses. (quote from page 1795) |accessdate=17 February 2013}} 2. ^European Classification (ECLA) on the Espacenet web site. Consulted on January 20, 2007. External links
1 : Patent classifications |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。