FR569300A - Improvements to telegraph systems - Google Patents

Improvements to telegraph systems

Info

Publication number
FR569300A
FR569300A FR569300DA FR569300A FR 569300 A FR569300 A FR 569300A FR 569300D A FR569300D A FR 569300DA FR 569300 A FR569300 A FR 569300A
Authority
FR
France
Prior art keywords
telegraph systems
telegraph
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 FR569300A publication Critical patent/FR569300A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/40—Artificial lines; Networks simulating a line of certain length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1407—Artificial lines or their setting
FR569300D 1922-08-03 1923-08-01 Improvements to telegraph systems Expired FR569300A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US579356A US1551797A (en) 1922-08-03 1922-08-03 Artificial line

Publications (1)

Publication Number Publication Date
FR569300A true FR569300A (en) 1924-04-09

Family

ID=24316567

Family Applications (1)

Application Number Title Priority Date Filing Date
FR569300D Expired FR569300A (en) 1922-08-03 1923-08-01 Improvements to telegraph systems

Country Status (4)

Country Link
US (1) US1551797A (en)
DE (1) DE494911C (en)
FR (1) FR569300A (en)
GB (1) GB201930A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014006716A1 (en) 2014-05-05 2015-11-05 Friedrich-Schiller-Universität Jena Method for generating light coupling to optical fibers by self-organizing photopolymer

Also Published As

Publication number Publication date
US1551797A (en) 1925-09-01
DE494911C (en) 1930-03-31
GB201930A (en) 1924-07-10

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