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FR612530A - Improvements to automatic and semi-automatic telephone systems - Google Patents

Improvements to automatic and semi-automatic telephone systems

Info

Publication number
FR612530A
FR612530A FR612530DA FR612530A FR 612530 A FR612530 A FR 612530A FR 612530D A FR612530D A FR 612530DA FR 612530 A FR612530 A FR 612530A
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 FR612530A publication Critical patent/FR612530A/en
Expired legal-status Critical Current

Links

Classifications

    • 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)
  • Monitoring And Testing Of Exchanges (AREA)
FR612530D 1925-03-30 1926-03-09 Improvements to automatic and semi-automatic telephone systems Expired FR612530A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB845525A GB255917A (en) 1925-03-30 1925-03-30 Improvements in automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
FR612530A true FR612530A (en) 1926-10-26

Family

ID=9852811

Family Applications (1)

Application Number Title Priority Date Filing Date
FR612530D Expired FR612530A (en) 1925-03-30 1926-03-09 Improvements to automatic and semi-automatic telephone systems

Country Status (2)

Country Link
FR (1) FR612530A (en)
GB (1) GB255917A (en)

Also Published As

Publication number Publication date
GB255917A (en) 1926-07-30

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