FR664527A - Systèmes télégraphiques - Google Patents

Systèmes télégraphiques

Info

Publication number
FR664527A
FR664527A FR664527DA FR664527A FR 664527 A FR664527 A FR 664527A FR 664527D A FR664527D A FR 664527DA FR 664527 A FR664527 A FR 664527A
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
English (en)
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR664527A publication Critical patent/FR664527A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR664527D 1927-12-17 1928-11-23 Systèmes télégraphiques Expired FR664527A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US240691A US1738292A (en) 1927-12-17 1927-12-17 Submarine duplex telegraph system

Publications (1)

Publication Number Publication Date
FR664527A true FR664527A (fr) 1929-09-04

Family

ID=22907542

Family Applications (1)

Application Number Title Priority Date Filing Date
FR664527D Expired FR664527A (fr) 1927-12-17 1928-11-23 Systèmes télégraphiques

Country Status (3)

Country Link
US (1) US1738292A (fr)
DE (1) DE543224C (fr)
FR (1) FR664527A (fr)

Also Published As

Publication number Publication date
DE543224C (de) 1932-02-03
US1738292A (en) 1929-12-03

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