FR777885A - Service call device - Google Patents

Service call device

Info

Publication number
FR777885A
FR777885A FR777885DA FR777885A FR 777885 A FR777885 A FR 777885A FR 777885D A FR777885D A FR 777885DA FR 777885 A FR777885 A FR 777885A
Authority
FR
France
Prior art keywords
service call
call device
service
call
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
Gustav Bruch
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 filed Critical
Application granted granted Critical
Publication of FR777885A publication Critical patent/FR777885A/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
    • G08B5/02—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using only mechanical transmission

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR777885D 1934-09-03 1934-09-03 Service call device Expired FR777885A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR777885T 1934-09-03

Publications (1)

Publication Number Publication Date
FR777885A true FR777885A (en) 1935-03-02

Family

ID=9201854

Family Applications (1)

Application Number Title Priority Date Filing Date
FR777885D Expired FR777885A (en) 1934-09-03 1934-09-03 Service call device

Country Status (1)

Country Link
FR (1) FR777885A (en)

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