FR754591A - Improvements to electrical transmission systems using lines fitted with repeater devices - Google Patents

Improvements to electrical transmission systems using lines fitted with repeater devices

Info

Publication number
FR754591A
FR754591A FR754591DA FR754591A FR 754591 A FR754591 A FR 754591A FR 754591D A FR754591D A FR 754591DA FR 754591 A FR754591 A FR 754591A
Authority
FR
France
Prior art keywords
transmission systems
electrical transmission
repeater devices
lines fitted
fitted
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 FR754591A publication Critical patent/FR754591A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/40—Applications of speech amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Emergency Alarm Devices (AREA)
FR754591D 1932-08-31 1933-04-21 Improvements to electrical transmission systems using lines fitted with repeater devices Expired FR754591A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US631159A US2003964A (en) 1932-08-31 1932-08-31 Repeatered line system

Publications (1)

Publication Number Publication Date
FR754591A true FR754591A (en) 1933-11-09

Family

ID=24530019

Family Applications (1)

Application Number Title Priority Date Filing Date
FR754591D Expired FR754591A (en) 1932-08-31 1933-04-21 Improvements to electrical transmission systems using lines fitted with repeater devices

Country Status (2)

Country Link
US (1) US2003964A (en)
FR (1) FR754591A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963965C (en) * 1948-10-02 1957-05-16 Siemens Ag Circuit arrangement for carrier frequency telephone systems
DE872377C (en) * 1950-07-02 1953-03-30 Siemens Ag Circuitry for monitoring the condition of facilities at a remote location
DE975879C (en) * 1951-10-05 1962-11-22 Normalzeit G M B H Method for monitoring the operating status of telecommunication lines of a telephony network that are equipped with electronic means
US3353278A (en) * 1964-08-24 1967-11-21 Bear Mfg Co Indicating attachment for wheel alinement testers

Also Published As

Publication number Publication date
US2003964A (en) 1935-06-04

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