patentcpc/E21B4-00

http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B4-00

Outgoing Links

Predicate	Object
concordantIPC	http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B4-00
level	7^^<http://www.w3.org/2001/XMLSchema#integer>
symbol	E21B4/00
modified	2020-05-01^^<http://www.w3.org/2001/XMLSchema#date>
title	Drives for drilling, used in the borehole
type	http://data.epo.org/linked-data/def/cpc/MainGroup
broader	http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Methods-or-apparatus-for-drilling-guide-heading

Incoming Links

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