FR429183A - Improvements to indicator lights in the dark - Google Patents

Improvements to indicator lights in the dark

Info

Publication number
FR429183A
FR429183A FR429183DA FR429183A FR 429183 A FR429183 A FR 429183A FR 429183D A FR429183D A FR 429183DA FR 429183 A FR429183 A FR 429183A
Authority
FR
France
Prior art keywords
dark
indicator lights
lights
indicator
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.)
VEREINIGTE UHRENFABRIKEN VON Gebr JUNGHANS UN
Original Assignee
VEREINIGTE UHRENFABRIKEN VON Gebr JUNGHANS UN
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 VEREINIGTE UHRENFABRIKEN VON Gebr JUNGHANS UN filed Critical VEREINIGTE UHRENFABRIKEN VON Gebr JUNGHANS UN
Application granted granted Critical
Publication of FR429183A publication Critical patent/FR429183A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/30—Illumination of dials or hands
    • G04B19/32—Illumination of dials or hands by luminescent substances

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR429183D 1911-05-01 1911-05-01 Improvements to indicator lights in the dark Expired FR429183A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR429183T 1911-05-01

Publications (1)

Publication Number Publication Date
FR429183A true FR429183A (en) 1911-09-16

Family

ID=1471535

Family Applications (1)

Application Number Title Priority Date Filing Date
FR429183D Expired FR429183A (en) 1911-05-01 1911-05-01 Improvements to indicator lights in the dark

Country Status (1)

Country Link
FR (1) FR429183A (en)

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