Chinese | English
LICP OpenIR

Facet browsing: Date Issued

Current Search ((ALL：Yu, Yuan))
Filters ((Document Type：专利))
 1-16 of 16
2023 2 2022 8 2021 8
2020 5 2019 2 2017 2
2016 1 2015 2 2014 1
2013 1 2012 2 2009 2
1995 1 1994 1 1992 1
1990 1