DK77276C - Kobling til automatiske telefoncentraler til udsendelse af automatisk gentagne ringesignaler. - Google Patents

Kobling til automatiske telefoncentraler til udsendelse af automatisk gentagne ringesignaler.

Info

Publication number: DK77276C
Authority: DK; Denmark
Prior art keywords: ringtones; coupling; sending out; out automatically; automatic telephone
Prior art date: 1950-10-06

Application number

DK291551AA

Other languages

Danish (da)

English (en)

Original Assignee

Ericsson Telefon Ab L M

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1950-10-06

Filing date

1951-09-29

Publication date

1954-03-22

1951-09-29 Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M

1954-03-22 Application granted granted Critical

1954-03-22 Publication of DK77276C publication Critical patent/DK77276C/da

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Interface Circuits In Exchanges (AREA)
Devices For Supply Of Signal Current (AREA)

DK291551AA 1950-10-06 1951-09-29 Kobling til automatiske telefoncentraler til udsendelse af automatisk gentagne ringesignaler. DK77276C (da)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SE295549X		1950-10-06
US251486A US2815404A (en)	1950-10-06	1951-10-16	Connection for automatic ring signal

Publications (1)

Publication Number	Publication Date
DK77276C true DK77276C (da)	1954-03-22

Family

ID=26656230

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK291551AA DK77276C (da)	1950-10-06	1951-09-29	Kobling til automatiske telefoncentraler til udsendelse af automatisk gentagne ringesignaler.

Country Status (8)

Country	Link
US (1)	US2815404A (fr)
BE (1)	BE506244A (fr)
CH (1)	CH295549A (fr)
DE (1)	DE892774C (fr)
DK (1)	DK77276C (fr)
FR (1)	FR1048563A (fr)
GB (1)	GB708450A (fr)
NL (2)	NL164412B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE547676A (fr) *	1955-05-18
NL262148A (fr) *	1961-03-08

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2410866A (en) *	1944-04-17	1946-11-12	Automatic Elect Lab	Telephone system

0
- NL NL82979D patent/NL82979C/xx active
- BE BE506244D patent/BE506244A/xx unknown
- NL NL7006793.A patent/NL164412B/xx unknown
1951
- 1951-09-24 CH CH295549D patent/CH295549A/de unknown
- 1951-09-29 DK DK291551AA patent/DK77276C/da active
- 1951-10-04 DE DET4982A patent/DE892774C/de not_active Expired
- 1951-10-05 GB GB23286/51A patent/GB708450A/en not_active Expired
- 1951-10-05 FR FR1048563D patent/FR1048563A/fr not_active Expired
- 1951-10-16 US US251486A patent/US2815404A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
BE506244A (fr)
CH295549A (de)	1953-12-31
GB708450A (en)	1954-05-05
US2815404A (en)	1957-12-03
NL82979C (fr)
NL164412B (nl)
DE892774C (de)	1953-10-12
FR1048563A (fr)	1953-12-22

Similar Documents

Publication	Publication Date	Title
CH321711A (de)	1957-05-15	Automatische Fernmeldeamtsanlage
FR1044709A (fr)	1953-11-20	Sélecteur pour centraux téléphoniques automatiques
CH294912A (fr)	1953-11-30	Installation de téléphonie automatique.
CH276285A (de)	1951-06-30	Teilnehmer-Telephonapparatstromkreis.
FR969200A (fr)	1950-12-15	Réseau téléphonique à centraux automatiques collectifs
CH275635A (de)	1951-05-31	Automatische Telephonregistrieranlage.
CH304196A (de)	1954-12-31	Fernsprechsystem mit Teilnehmerapparat.
CH276568A (de)	1951-07-15	Teilnehmerschaltung in einer selbsttätigen Fernsprechanlage.
DK77276C (da)	1954-03-22	Kobling til automatiske telefoncentraler til udsendelse af automatisk gentagne ringesignaler.
FR1023959A (fr)	1953-03-26	Perfectionnements aux centraux téléphoniques automatiques
CH270706A (de)	1950-09-15	Automatische Telephonanlage.
DK81237C (da)	1956-07-02	Indretning til viderekobling af ringesignaler ved telefonapparater.
CH280685A (fr)	1952-01-31	Réseau téléphonique.
DK89108C (da)	1960-06-07	Linieudvælgesystem til automatiske telefoncentraler.
CH262449A (de)	1949-06-30	Automatische Telephonanlage.
DK82374C (da)	1957-03-25	Koblingsanordning ved automatiske telefonstationer.
AT185412B (de)	1956-04-25	Automatisches Telephon-Wählsystem
FR1048946A (fr)	1953-12-24	Central téléphonique automatique
DK91326C (da)	1961-07-17	Automatisk telefoncentral med abonnentkredse.
DK79993C (da)	1955-10-17	Kobling til frembringelse af ringesignaler på abonnentledninger.
CH313059A (de)	1956-03-15	Automatische Telephonzentraleneinrichtung
DK83455C (da)	1957-09-23	Ekspeditionsplads til telefoncentralanlæg til betjening af fjernforbindelser.
IE22093L (en)	1950-12-30	Automatic telecommunication exchanges
DK78201C (da)	1954-10-04	Automatisk abonnentveksler.
DK77899C (da)	1954-08-02	Anordning ved automatiske telefoncentraler til samtaledebitering.