FR789413A - Improvements for combined telegraph or telegraph and telephone connection systems - Google Patents

Improvements for combined telegraph or telegraph and telephone connection systems

Info

Publication number
FR789413A
FR789413A FR789413DA FR789413A FR 789413 A FR789413 A FR 789413A FR 789413D A FR789413D A FR 789413DA FR 789413 A FR789413 A FR 789413A
Authority
FR
France
Prior art keywords
telegraph
combined
telephone connection
connection systems
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 FR789413A publication Critical patent/FR789413A/en
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
FR789413D 1934-06-18 1935-04-30 Improvements for combined telegraph or telegraph and telephone connection systems Expired FR789413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1804834A GB439970A (en) 1934-06-18 1934-06-18 Improvements in or relating to combined telegraph and telephone exchange systems

Publications (1)

Publication Number Publication Date
FR789413A true FR789413A (en) 1935-10-29

Family

ID=10105733

Family Applications (1)

Application Number Title Priority Date Filing Date
FR789413D Expired FR789413A (en) 1934-06-18 1935-04-30 Improvements for combined telegraph or telegraph and telephone connection systems

Country Status (3)

Country Link
BE (1) BE408646A (en)
FR (1) FR789413A (en)
GB (1) GB439970A (en)

Also Published As

Publication number Publication date
BE408646A (en)
GB439970A (en) 1935-12-18

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