FR890235A - Système de transmission de communications - Google Patents

Système de transmission de communications

Info

Publication number
FR890235A
FR890235A FR890235DA FR890235A FR 890235 A FR890235 A FR 890235A FR 890235D A FR890235D A FR 890235DA FR 890235 A FR890235 A FR 890235A
Authority
FR
France
Prior art keywords
transmission system
communications transmission
communications
transmission
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.)
Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
Original Assignee
Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
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 Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH filed Critical Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
Application granted granted Critical
Publication of FR890235A publication Critical patent/FR890235A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/78—Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR890235D 1941-06-10 1943-01-19 Système de transmission de communications Expired FR890235A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE890235X 1941-06-10

Publications (1)

Publication Number Publication Date
FR890235A true FR890235A (fr) 1944-02-02

Family

ID=6836486

Family Applications (1)

Application Number Title Priority Date Filing Date
FR890235D Expired FR890235A (fr) 1941-06-10 1943-01-19 Système de transmission de communications

Country Status (1)

Country Link
FR (1) FR890235A (fr)

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