Predicate |
Object |
title |
involving mirrors |
label |
G02B21/04 |
sameAs |
http://www.wipo.int/classifications/ipc/ipcpub/?notion=scheme&symbol=G02B0021040000 http://data.epo.org/linked-data/def/ipc/G02B21-04 |
broader |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B21-02 |