FR714352A - Télégraphie ultra-téléphonique - Google Patents

Télégraphie ultra-téléphonique

Info

Publication number
FR714352A
FR714352A FR714352DA FR714352A FR 714352 A FR714352 A FR 714352A FR 714352D A FR714352D A FR 714352DA FR 714352 A FR714352 A FR 714352A
Authority
FR
France
Prior art keywords
telegraphy
ultra
telephone
telephone telegraphy
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.)
Lignes Telegraphiques et Telephoniques LTT SA
Original Assignee
Lignes Telegraphiques et Telephoniques LTT SA
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 Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA
Application granted granted Critical
Publication of FR714352A publication Critical patent/FR714352A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR714352D 1930-07-19 1930-07-19 Télégraphie ultra-téléphonique Expired FR714352A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR714352T 1930-07-19

Publications (1)

Publication Number Publication Date
FR714352A true FR714352A (fr) 1931-11-13

Family

ID=9086905

Family Applications (1)

Application Number Title Priority Date Filing Date
FR714352D Expired FR714352A (fr) 1930-07-19 1930-07-19 Télégraphie ultra-téléphonique

Country Status (1)

Country Link
FR (1) FR714352A (fr)

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