FR508145A - Dispositif automatique de fin de conversation téléphonique - Google Patents

Dispositif automatique de fin de conversation téléphonique

Info

Publication number
FR508145A
FR508145A FR508145A FR508145DA FR508145A FR 508145 A FR508145 A FR 508145A FR 508145 A FR508145 A FR 508145A FR 508145D A FR508145D A FR 508145DA FR 508145 A FR508145 A FR 508145A
Authority
FR
France
Prior art keywords
end device
telephone conversation
automatic telephone
conversation end
automatic
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
FR508145A
Other languages
English (en)
Inventor
Georges-Louis Roussotte
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.)
GEORGES LOUIS ROUSSOTTE
Original Assignee
GEORGES LOUIS ROUSSOTTE
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 GEORGES LOUIS ROUSSOTTE filed Critical GEORGES LOUIS ROUSSOTTE
Application granted granted Critical
Publication of FR508145A publication Critical patent/FR508145A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/24—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane
    • G08B5/28—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane with hinged flap or arm

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR508145A 1920-01-05 1920-01-05 Dispositif automatique de fin de conversation téléphonique Expired FR508145A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR508145T 1920-01-05

Publications (1)

Publication Number Publication Date
FR508145A true FR508145A (fr) 1920-10-02

Family

ID=8910202

Family Applications (1)

Application Number Title Priority Date Filing Date
FR508145A Expired FR508145A (fr) 1920-01-05 1920-01-05 Dispositif automatique de fin de conversation téléphonique

Country Status (1)

Country Link
FR (1) FR508145A (fr)

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