GB445099A - Improvements in or relating to automatic or semi-automatic telephone systems - Google Patents

Improvements in or relating to automatic or semi-automatic telephone systems

Info

Publication number
GB445099A
GB445099A GB33179/35A GB3317935A GB445099A GB 445099 A GB445099 A GB 445099A GB 33179/35 A GB33179/35 A GB 33179/35A GB 3317935 A GB3317935 A GB 3317935A GB 445099 A GB445099 A GB 445099A
Authority
GB
United Kingdom
Prior art keywords
relay
circuit
switch
operates
train
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
GB33179/35A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB445099A publication Critical patent/GB445099A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Motor And Converter Starters (AREA)
GB33179/35A 1935-03-20 1935-11-29 Improvements in or relating to automatic or semi-automatic telephone systems Expired GB445099A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11927A US2050722A (en) 1935-03-20 1935-03-20 Telephone system

Publications (1)

Publication Number Publication Date
GB445099A true GB445099A (en) 1936-04-02

Family

ID=21752561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33179/35A Expired GB445099A (en) 1935-03-20 1935-11-29 Improvements in or relating to automatic or semi-automatic telephone systems

Country Status (4)

Country Link
US (1) US2050722A (enrdf_load_stackoverflow)
CH (1) CH211215A (enrdf_load_stackoverflow)
GB (1) GB445099A (enrdf_load_stackoverflow)
NL (1) NL46829C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE955327C (de) * 1938-07-29 1957-01-03 Telefonbau & Normalzeit Gmbh Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb und mehreren in Reihe liegenden Vermittlungsstellen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE955327C (de) * 1938-07-29 1957-01-03 Telefonbau & Normalzeit Gmbh Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb und mehreren in Reihe liegenden Vermittlungsstellen

Also Published As

Publication number Publication date
CH211215A (de) 1940-08-31
US2050722A (en) 1936-08-11
NL46829C (enrdf_load_stackoverflow)

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