FR606028A - Improvements to systems for telephone exchanges - Google Patents

Improvements to systems for telephone exchanges

Info

Publication number
FR606028A
FR606028A FR606028DA FR606028A FR 606028 A FR606028 A FR 606028A FR 606028D A FR606028D A FR 606028DA FR 606028 A FR606028 A FR 606028A
Authority
FR
France
Prior art keywords
systems
telephone exchanges
exchanges
telephone
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.)
Active
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 of FR606028A publication Critical patent/FR606028A/en
Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Active legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
FR606028D 1925-01-07 1925-10-23 Improvements to systems for telephone exchanges Active FR606028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB53425A GB250643A (en) 1925-01-07 1925-01-07 Improvements in or relating to telephone exchange systems

Publications (1)

Publication Number Publication Date
FR606028A true FR606028A (en)

Family

ID=9706019

Family Applications (1)

Application Number Title Priority Date Filing Date
FR606028D Active FR606028A (en) 1925-01-07 1925-10-23 Improvements to systems for telephone exchanges

Country Status (2)

Country Link
FR (1) FR606028A (en)
GB (1) GB250643A (en)

Also Published As

Publication number Publication date
GB250643A (en) 1926-04-07

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