FR346329A - Improvements in electrical signals for indicator boards, etc. - Google Patents

Improvements in electrical signals for indicator boards, etc.

Info

Publication number
FR346329A
FR346329A FR346329DA FR346329A FR 346329 A FR346329 A FR 346329A FR 346329D A FR346329D A FR 346329DA FR 346329 A FR346329 A FR 346329A
Authority
FR
France
Prior art keywords
electrical signals
indicator boards
boards
indicator
signals
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.)
CARADEAU FRERES SOC
Original Assignee
CARADEAU FRERES SOC
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 CARADEAU FRERES SOC filed Critical CARADEAU FRERES SOC
Application granted granted Critical
Publication of FR346329A publication Critical patent/FR346329A/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)
FR346329D 1904-09-10 1904-09-10 Improvements in electrical signals for indicator boards, etc. Expired FR346329A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR346329T 1904-09-10

Publications (1)

Publication Number Publication Date
FR346329A true FR346329A (en) 1905-01-11

Family

ID=1395052

Family Applications (1)

Application Number Title Priority Date Filing Date
FR346329D Expired FR346329A (en) 1904-09-10 1904-09-10 Improvements in electrical signals for indicator boards, etc.

Country Status (1)

Country Link
FR (1) FR346329A (en)

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