FR715391A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR715391A
FR715391A FR715391DA FR715391A FR 715391 A FR715391 A FR 715391A FR 715391D A FR715391D A FR 715391DA FR 715391 A FR715391 A FR 715391A
Authority
FR
France
Prior art keywords
telephone systems
telephone
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.)
Sueddeutsche Apparate Fabrik GmbH
Original Assignee
Sueddeutsche Apparate Fabrik GmbH
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 Sueddeutsche Apparate Fabrik GmbH filed Critical Sueddeutsche Apparate Fabrik GmbH
Application granted granted Critical
Publication of FR715391A publication Critical patent/FR715391A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
FR715391D 1930-08-14 1930-08-14 Improvements to telephone systems Expired FR715391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR715391T 1930-08-14

Publications (1)

Publication Number Publication Date
FR715391A true FR715391A (en) 1931-12-02

Family

ID=9088911

Family Applications (1)

Application Number Title Priority Date Filing Date
FR715391D Expired FR715391A (en) 1930-08-14 1930-08-14 Improvements to telephone systems

Country Status (1)

Country Link
FR (1) FR715391A (en)

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