http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1049170-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5cb7fcecd190e704fa84460463321203 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04M1-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04M3-42 |
| filingDate | 1976-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1979-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f2eb85b7d1fb4e739a661fdf908e3160 |
| publicationDate | 1979-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1049170-A |
| titleOfInvention | Signalling device for key telephone systems |
| abstract | Abstract of the Disclosure The present invention relates to a device which is to be used in conjunction with key telephone system, as for example, intercom system. More particularly, the invention consists of a device for decoding the pulse output from rotary dial telephones, indicating which digit has been dialed and selectively signalling the called party. Special features include acceptance of a wide rage of pulse speeds and ratios with decoding immunity to the initial hookswitch closure and the last opening. The latter per-mits the digit "1" to used, providing for an additional signal function. A decoding matrix operates a relay tree with provisions for either single or tow-digit codes. The device is intended for use in key telephone system which include rotary dial telephones. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2103187-A1 |
| priorityDate | 1976-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.