GB556920A - Improvements in or relating to selector operating circuits for use in automatic telephone or like systems - Google Patents

Improvements in or relating to selector operating circuits for use in automatic telephone or like systems

Info

Publication number
GB556920A
GB556920A GB5217/42A GB521742A GB556920A GB 556920 A GB556920 A GB 556920A GB 5217/42 A GB5217/42 A GB 5217/42A GB 521742 A GB521742 A GB 521742A GB 556920 A GB556920 A GB 556920A
Authority
GB
United Kingdom
Prior art keywords
systems
relating
automatic telephone
operating circuits
selector operating
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
GB5217/42A
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
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 Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Publication of GB556920A publication Critical patent/GB556920A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/50—Conversion between different kinds of signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
GB5217/42A 1942-04-20 1942-04-20 Improvements in or relating to selector operating circuits for use in automatic telephone or like systems Expired GB556920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB247351X 1942-04-20

Publications (1)

Publication Number Publication Date
GB556920A true GB556920A (en) 1943-10-27

Family

ID=10216422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5217/42A Expired GB556920A (en) 1942-04-20 1942-04-20 Improvements in or relating to selector operating circuits for use in automatic telephone or like systems

Country Status (5)

Country Link
US (1) US2422285A (enrdf_load_stackoverflow)
CH (2) CH251036A (enrdf_load_stackoverflow)
FR (1) FR933089A (enrdf_load_stackoverflow)
GB (1) GB556920A (enrdf_load_stackoverflow)
NL (1) NL71148C (enrdf_load_stackoverflow)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1463972A (en) * 1923-08-07 Automatic telephone system
US1503923A (en) * 1918-05-06 1924-08-05 Stromberg Carlson Telephone Telephone switching system
US2090205A (en) * 1934-06-21 1937-08-17 Siemens Brothers & Co Ltd Electric remote control system
US2058216A (en) * 1935-05-11 1936-10-20 Bell Telephone Labor Inc Signaling system
GB469664A (en) * 1936-01-29 1937-07-29 Automatic Electric Co Ltd Improvements in automatic switches for use in telephone or like systems

Also Published As

Publication number Publication date
FR933089A (fr) 1948-04-09
US2422285A (en) 1947-06-17
NL71148C (enrdf_load_stackoverflow)
CH251036A (fr) 1947-09-30
CH247351A (fr) 1947-02-28

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