FR722363A - Electric flashing signal - Google Patents

Electric flashing signal

Info

Publication number
FR722363A
FR722363A FR722363DA FR722363A FR 722363 A FR722363 A FR 722363A FR 722363D A FR722363D A FR 722363DA FR 722363 A FR722363 A FR 722363A
Authority
FR
France
Prior art keywords
flashing signal
electric flashing
electric
signal
flashing
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
Andre Garbarini
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 FR722363A publication Critical patent/FR722363A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
    • G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR722363D 1930-11-29 1930-11-29 Electric flashing signal Expired FR722363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR722363T 1930-11-29

Publications (1)

Publication Number Publication Date
FR722363A true FR722363A (en) 1932-03-16

Family

ID=9101099

Family Applications (1)

Application Number Title Priority Date Filing Date
FR722363D Expired FR722363A (en) 1930-11-29 1930-11-29 Electric flashing signal

Country Status (1)

Country Link
FR (1) FR722363A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1015353B (en) * 1955-07-16 1957-09-05 Fruengel Frank Dr Ing Pulse-optical light barrier automatically switchable to ultrasound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1015353B (en) * 1955-07-16 1957-09-05 Fruengel Frank Dr Ing Pulse-optical light barrier automatically switchable to ultrasound

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