Predicate |
Object |
title |
mercury vapour |
label |
H01J61/20 |
sameAs |
http://data.epo.org/linked-data/def/ipc/H01J61-20 http://www.wipo.int/classifications/ipc/ipcpub/?notion=scheme&symbol=H01J0061200000 |
broader |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J61-18 |