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International Patent Classification (IPC) Ontology
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ipc:
Classification
http://data.epo.org/linked-data/def/ipc/Classification
rdfs:
subClassOf
http://www.w3.org/2000/01/rdf-schema#subClassOf
skos:
Concept
http://www.w3.org/2004/02/skos/core#Concept
graph:
default
https://triplydb.com/none/ipc-ontology/graphs/default