FR728611A - Improvements to electrical signaling systems - Google Patents

Improvements to electrical signaling systems

Info

Publication number
FR728611A
FR728611A FR728611DA FR728611A FR 728611 A FR728611 A FR 728611A FR 728611D A FR728611D A FR 728611DA FR 728611 A FR728611 A FR 728611A
Authority
FR
France
Prior art keywords
signaling systems
electrical signaling
electrical
systems
signaling
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Application granted granted Critical
Publication of FR728611A publication Critical patent/FR728611A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR728611D 1930-12-13 1931-12-11 Improvements to electrical signaling systems Expired FR728611A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US728611XA 1930-12-13 1930-12-13

Publications (1)

Publication Number Publication Date
FR728611A true FR728611A (en) 1932-07-08

Family

ID=22110186

Family Applications (1)

Application Number Title Priority Date Filing Date
FR728611D Expired FR728611A (en) 1930-12-13 1931-12-11 Improvements to electrical signaling systems

Country Status (1)

Country Link
FR (1) FR728611A (en)

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