http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B4-16
Outgoing Links
| Predicate | Object |
|---|---|
| concordantIPC | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B4-16 |
| level | 8^^<http://www.w3.org/2001/XMLSchema#integer> |
| symbol | E21B4/16 |
| modified | 2013-01-01^^<http://www.w3.org/2001/XMLSchema#date> |
| title | Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units |
| type | http://data.epo.org/linked-data/def/cpc/SubGroup |
| broader | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B4-00 |
Incoming Links
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