FR334098A - Device for central telephone offices - Google Patents

Device for central telephone offices

Info

Publication number
FR334098A
FR334098A FR334098DA FR334098A FR 334098 A FR334098 A FR 334098A FR 334098D A FR334098D A FR 334098DA FR 334098 A FR334098 A FR 334098A
Authority
FR
France
Prior art keywords
central telephone
telephone offices
offices
central
telephone
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)
Inventor
Gaston S. Duchatel
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.)
GASTON S DUCHATEL
Original Assignee
GASTON S DUCHATEL
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 GASTON S DUCHATEL filed Critical GASTON S DUCHATEL
Application granted granted Critical
Publication of FR334098A publication Critical patent/FR334098A/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
    • G08B5/24—Visible signalling systems, e.g. personal calling systems, 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. personal calling systems, 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)
FR334098D 1903-07-24 1903-07-24 Device for central telephone offices Expired FR334098A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR334098T 1903-07-24

Publications (1)

Publication Number Publication Date
FR334098A true FR334098A (en) 1903-12-10

Family

ID=1383654

Family Applications (1)

Application Number Title Priority Date Filing Date
FR334098D Expired FR334098A (en) 1903-07-24 1903-07-24 Device for central telephone offices

Country Status (1)

Country Link
FR (1) FR334098A (en)

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