FR518321A - Light signals or calls - Google Patents

Light signals or calls

Info

Publication number
FR518321A
FR518321A FR518321A FR518321DA FR518321A FR 518321 A FR518321 A FR 518321A FR 518321 A FR518321 A FR 518321A FR 518321D A FR518321D A FR 518321DA FR 518321 A FR518321 A FR 518321A
Authority
FR
France
Prior art keywords
calls
light signals
signals
light
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
FR518321A
Other languages
French (fr)
Inventor
Jules Louis Morisons
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR518321A publication Critical patent/FR518321A/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
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR518321A 1917-10-20 1920-06-30 Light signals or calls Expired FR518321A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE518321X 1917-10-20

Publications (1)

Publication Number Publication Date
FR518321A true FR518321A (en) 1921-05-23

Family

ID=3871270

Family Applications (1)

Application Number Title Priority Date Filing Date
FR518321A Expired FR518321A (en) 1917-10-20 1920-06-30 Light signals or calls

Country Status (1)

Country Link
FR (1) FR518321A (en)

Similar Documents

Publication Publication Date Title
FR518321A (en) Light signals or calls
FR537948A (en) Transparent tiles or pavers
FR509842A (en) Level improvements
FI6704A (en) Sparur
FR485168A (en) Photometer
CH76651A (en) Weir
FR488228A (en) Plowing winch
FR511129A (en) Winch
AT78053B (en) Can light.
CH77400A (en) Compass
FI6708A (en) Antedevrations Compass
CH77393A (en) Circle
CH75295A (en) Slide attachment
FR519015A (en) Improvements to light signals
CH75685A (en) centrifuge
FI6623A (en) Torvpress
CH78078A (en) Self-cooker
FI6684A (en) Dikningsmaskin
FI6859A (en) Kombinerad trösk-skördemaskin
FI6658A (en) Dubbelram
FI6656A (en) Trädkapningsmaskin
FI6654A (en) Class
FI6646A (en) Photogens
FI6642A (en) Spåntkittare
FI6743A (en) Pejlingsinstrument