FR1131297A - New sound signal receiver - Google Patents

New sound signal receiver

Info

Publication number
FR1131297A
FR1131297A FR1131297DA FR1131297A FR 1131297 A FR1131297 A FR 1131297A FR 1131297D A FR1131297D A FR 1131297DA FR 1131297 A FR1131297 A FR 1131297A
Authority
FR
France
Prior art keywords
sound signal
signal receiver
new sound
new
receiver
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.)
FR DE RADIO ET TELEVISION SOC
Societe Francaise du Radiotelephone SFR SA
Original Assignee
FR DE RADIO ET TELEVISION SOC
Societe Francaise du Radiotelephone SFR 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 FR DE RADIO ET TELEVISION SOC, Societe Francaise du Radiotelephone SFR SA filed Critical FR DE RADIO ET TELEVISION SOC
Application granted granted Critical
Publication of FR1131297A publication Critical patent/FR1131297A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR1131297D 1955-09-17 1955-09-17 New sound signal receiver Expired FR1131297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1131297T 1955-09-17

Publications (1)

Publication Number Publication Date
FR1131297A true FR1131297A (en) 1957-02-19

Family

ID=9637824

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1131297D Expired FR1131297A (en) 1955-09-17 1955-09-17 New sound signal receiver

Country Status (1)

Country Link
FR (1) FR1131297A (en)

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