| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_51b0c7d1f4c665b91cf639098748dc01 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T137-86936
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B2200-04 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B34-106 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B34-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B34-10 |
| filingDate |
1973-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1975-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25bd376a013d41a8859b12f105305eb2 |
| publicationDate |
1975-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3901321-A |
| titleOfInvention |
Safety valve method and apparatus |
| abstract |
A remote controlled safety valve adapted for use in a well to shut-in production flow at a subsurface location. The valve operates by rotating a ball-type closure element after spacing the element from a pair of valve seats and then resealing the seats with the element after rotation is complete. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2601254-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3993136-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2601254-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4293038-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2013220609-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4603742-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8925894-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4552219-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4469180-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2013214189-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4603740-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4377179-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5052657-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4019580-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11448326-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4026362-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4141418-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4144937-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0015943-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4610308-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9297229-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6708946-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021054939-A1 |
| priorityDate |
1973-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |