ES173251A1 - Mejoras en sistemas telefónicos automáticos - Google Patents

Mejoras en sistemas telefónicos automáticos

Info

Publication number
ES173251A1
ES173251A1 ES173251A ES173251A ES173251A1 ES 173251 A1 ES173251 A1 ES 173251A1 ES 173251 A ES173251 A ES 173251A ES 173251 A ES173251 A ES 173251A ES 173251 A1 ES173251 A1 ES 173251A1
Authority
ES
Spain
Prior art keywords
telephone systems
automatic telephone
automatic
systems
telephone
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES173251A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
Standard Electrica SA
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.)
Filing date
Publication date
Application filed by Alcatel Espana SA, Standard Electrica SA filed Critical Alcatel Espana SA
Publication of ES173251A1 publication Critical patent/ES173251A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
ES173251A 1945-03-12 1946-04-17 Mejoras en sistemas telefónicos automáticos Expired ES173251A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US582195A US2426210A (en) 1945-03-12 1945-03-12 Intercept operator's position for unassigned party line stations

Publications (1)

Publication Number Publication Date
ES173251A1 true ES173251A1 (es) 1946-05-16

Family

ID=24328192

Family Applications (1)

Application Number Title Priority Date Filing Date
ES173251A Expired ES173251A1 (es) 1945-03-12 1946-04-17 Mejoras en sistemas telefónicos automáticos

Country Status (5)

Country Link
US (1) US2426210A (es)
CH (1) CH262449A (es)
ES (1) ES173251A1 (es)
FR (1) FR923733A (es)
NL (1) NL76335C (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2871300A (en) * 1953-03-12 1959-01-27 Itt Intercept discriminator
US3909543A (en) * 1974-01-17 1975-09-30 Itt Disconnector circuit arrangement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1727137A (en) * 1925-12-21 1929-09-03 Automatic Electric Inc Automatic telephone system
US1738059A (en) * 1926-09-22 1929-12-03 Automatic Electric Inc Telephone system
US2224497A (en) * 1939-04-15 1940-12-10 Associated Electric Lab Inc Telephone system
US2300186A (en) * 1941-03-29 1942-10-27 Kellogg Switchboard & Supply Telephone system
US2344634A (en) * 1942-01-08 1944-03-21 Stromberg Carlson Telephone Telephone intercept system

Also Published As

Publication number Publication date
US2426210A (en) 1947-08-26
FR923733A (fr) 1947-07-16
NL76335C (es)
CH262449A (de) 1949-06-30

Similar Documents

Publication Publication Date Title
ES176259A1 (es) Mejoras en sistemas de telecomunicación de vias múltiples
ES182178A1 (es) Mejoras en radiorreceptores
ES180663A1 (es) Mejoras en radiorreceptores
ES174626A1 (es) Mejoras en sistemas de centrales telefónicas.
ES173251A1 (es) Mejoras en sistemas telefónicos automáticos
ES182020A1 (es) Mejoras en repetidores de impulsos para telefonía automática
ES182436A1 (es) Mejoras en sistemas de conmutación electrónica
CH270706A (de) Automatische Telephonanlage.
ES170226A1 (es) Mejoras en sistemas telefónicos
FR1014565A (fr) Système téléphonique semi-automatique
CH283934A (fr) Installation téléphonique.
FR919148A (fr) Aérogare
FR911018A (fr) Rasoir automatique
ES181974A1 (es) Mejoras en sistemas de transmisión de mensajes
ES170424A1 (es) Mejoras en sistemas telefónicos automáticos y semiautomáticos
ES170186A1 (es) Un perfeccionamiento en sistemas de telefonía automática
ES170453A1 (es) Mejoras en sistemas receptores
ES176612A1 (es) Mejoras en sistemas de radiofaro
AT180598B (de) Telephonapparat
CH263435A (de) Telephonanlage.
ES169708A1 (es) Perfeccionamientos en sistemas de conmutación
FR930964A (fr) Système de téléphonie automatique
ES11941Y (es) Aparato calculador automático.
ES168639A1 (es) Perfeccionamientos en lso sistemas telefonicos o similares
ES175710A1 (es) Mejoras en sistemas de recepción