FR515482A - Improvements to automatic central office systems - Google Patents

Improvements to automatic central office systems

Info

Publication number
FR515482A
FR515482A FR515482A FR515482DA FR515482A FR 515482 A FR515482 A FR 515482A FR 515482 A FR515482 A FR 515482A FR 515482D A FR515482D A FR 515482DA FR 515482 A FR515482 A FR 515482A
Authority
FR
France
Prior art keywords
central office
office systems
automatic central
automatic
systems
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
FR515482A
Other languages
French (fr)
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR515482A publication Critical patent/FR515482A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Structure Of Telephone Exchanges (AREA)
FR515482A 1919-05-21 1920-05-14 Improvements to automatic central office systems Expired FR515482A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US298580A US1456507A (en) 1919-05-21 1919-05-21 Tandem allotting system

Publications (1)

Publication Number Publication Date
FR515482A true FR515482A (en) 1921-04-02

Family

ID=23151130

Family Applications (1)

Application Number Title Priority Date Filing Date
FR515482A Expired FR515482A (en) 1919-05-21 1920-05-14 Improvements to automatic central office systems

Country Status (5)

Country Link
US (1) US1456507A (en)
DE (1) DE429787C (en)
FR (1) FR515482A (en)
GB (1) GB143498A (en)
NL (1) NL8317C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB575294A (en) * 1944-01-12 1946-02-12 Automatic Telephone & Elect Improvements in or relating to telephone systems
US2567650A (en) * 1947-04-23 1951-09-11 Stromberg Carlson Co Automatic telephone system
US2613277A (en) * 1947-10-05 1952-10-07 Int Standard Electric Corp Telephone system

Also Published As

Publication number Publication date
US1456507A (en) 1923-05-29
NL8317C (en)
DE429787C (en) 1926-06-03
GB143498A (en) 1921-01-20

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