classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-111193-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-115276-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-118895-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/HK-1034769-A1 |