共 2 条
[1]
http://documents.epo.org/projects/babylon/eponet.nsf/0/AE0D8972A8253AFDC1257A7F0031339E/$File/PatentinfoNews0312en.pdf . 2013
[2]
http://www.cooperativepatentclassification.org/publications/CPCPresentation.pdf . 2013