FR1134739A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR1134739A
FR1134739A FR1134739DA FR1134739A FR 1134739 A FR1134739 A FR 1134739A FR 1134739D A FR1134739D A FR 1134739DA FR 1134739 A FR1134739 A FR 1134739A
Authority
FR
France
Prior art keywords
telephone systems
telephone
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
Other languages
French (fr)
Inventor
Martinus Den Hertog
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR1134739A publication Critical patent/FR1134739A/en
Expired legal-status Critical Current

Links

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)
  • Exchange Systems With Centralized Control (AREA)
FR1134739D 1954-06-03 1955-06-03 Improvements to telephone systems Expired FR1134739A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL793254X 1954-06-03

Publications (1)

Publication Number Publication Date
FR1134739A true FR1134739A (en) 1957-04-17

Family

ID=8714169

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1134739D Expired FR1134739A (en) 1954-06-03 1955-06-03 Improvements to telephone systems
FR793254A Expired FR75636E (en) 1954-06-03 1959-04-27 Improvements to telephone systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR793254A Expired FR75636E (en) 1954-06-03 1959-04-27 Improvements to telephone systems

Country Status (3)

Country Link
BE (2) BE538654A (en)
DE (1) DE1008362B (en)
FR (2) FR1134739A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2095184A1 (en) * 1970-06-30 1972-02-11 Cit Alcatel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1512962C2 (en) * 1967-06-29 1974-03-07 Siemens Ag, 1000 Berlin U. 8000 Muenchen Circuit arrangement for converting coded dialing codes into direct current dialing pulse series in telephone systems

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2531615A (en) * 1948-10-29 1950-11-28 Bell Telephone Labor Inc Telephone system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2095184A1 (en) * 1970-06-30 1972-02-11 Cit Alcatel

Also Published As

Publication number Publication date
BE538654A (en) 1955-12-02
BE567180A (en) 1958-10-28
FR75636E (en) 1961-07-21
DE1008362B (en) 1957-05-16

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