FR938489A - Dispositif avertisseur - Google Patents

Dispositif avertisseur

Info

Publication number
FR938489A
FR938489A FR938489DA FR938489A FR 938489 A FR938489 A FR 938489A FR 938489D A FR938489D A FR 938489DA FR 938489 A FR938489 A FR 938489A
Authority
FR
France
Prior art keywords
warning device
warning
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
English (en)
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
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 Automatic Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Application granted granted Critical
Publication of FR938489A publication Critical patent/FR938489A/fr
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)
FR938489D 1939-11-30 1946-12-06 Dispositif avertisseur Expired FR938489A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US938489XA 1939-11-30 1939-11-30

Publications (1)

Publication Number Publication Date
FR938489A true FR938489A (fr) 1948-09-16

Family

ID=22241178

Family Applications (1)

Application Number Title Priority Date Filing Date
FR938489D Expired FR938489A (fr) 1939-11-30 1946-12-06 Dispositif avertisseur

Country Status (1)

Country Link
FR (1) FR938489A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678436A (en) * 1951-02-21 1954-05-11 Int Standard Electric Corp Polarized alternating current ringer or buzzer for telephone subsets and similar apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678436A (en) * 1951-02-21 1954-05-11 Int Standard Electric Corp Polarized alternating current ringer or buzzer for telephone subsets and similar apparatus

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