| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_34c42dd6dbec7d5e8d5a64cdd367c55d |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04Q5-245
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04M19-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04M19-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04M19-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04Q5-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04M19-08 |
| filingDate |
1969-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1972-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d6e145880aed21484474b27173893510
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_559495fb9c92c9cf49cb92d0cc38251c |
| publicationDate |
1972-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3639692-A |
| titleOfInvention |
Subscriber terminal unit for telephone carrier system |
| abstract |
The disclosure relates to a subscriber terminal for a telephone communication system which is adapted for connection to a cable transmission pair from a central office to supply an additional facility without affecting the original system. The subscriber terminal utilizes a rechargeable battery which furnishes power to its receiver and transmitter sections which operate at frequencies different from those of the physical communication system. The battery is controlled by a charging circuit so as to be charged by the central office power supply during nonoperation of the physical system. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2014077589-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3934089-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4105867-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4807225-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3886321-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3780228-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9362753-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3691593-A |
| priorityDate |
1966-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |