FR698488A - Improvements to automatic or semi-automatic telephone systems - Google Patents

Improvements to automatic or semi-automatic telephone systems

Info

Publication number
FR698488A
FR698488A FR698488DA FR698488A FR 698488 A FR698488 A FR 698488A FR 698488D A FR698488D A FR 698488DA FR 698488 A FR698488 A FR 698488A
Authority
FR
France
Prior art keywords
automatic
semi
telephone systems
automatic 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)
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 FR698488A publication Critical patent/FR698488A/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)
  • Control Of Position Or Direction (AREA)
FR698488D 1929-06-21 1930-03-28 Improvements to automatic or semi-automatic telephone systems Expired FR698488A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19089/29A GB335529A (en) 1929-06-21 1929-06-21 Improvements in automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
FR698488A true FR698488A (en) 1931-01-31

Family

ID=10123594

Family Applications (1)

Application Number Title Priority Date Filing Date
FR698488D Expired FR698488A (en) 1929-06-21 1930-03-28 Improvements to automatic or semi-automatic telephone systems

Country Status (4)

Country Link
US (1) US1831399A (en)
DE (1) DE569573C (en)
FR (1) FR698488A (en)
GB (1) GB335529A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472885A (en) * 1940-07-19 1949-06-14 Barber Colman Co Automatic multiple stage telegraph system
US2618708A (en) * 1942-08-06 1952-11-18 Automatic Elect Lab Telephone system with main and secondary register
BE471330A (en) * 1946-02-23
US2541936A (en) * 1947-07-10 1951-02-13 Stromberg Carlson Co Register-sender for automatic telephone systems

Also Published As

Publication number Publication date
DE569573C (en) 1933-02-20
GB335529A (en) 1930-09-22
US1831399A (en) 1931-11-10

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