CH80551A - Perfectionnement aux éléments indicateurs lumineux, tels que cadrans, aiguilles etc. - Google Patents

Perfectionnement aux éléments indicateurs lumineux, tels que cadrans, aiguilles etc.

Info

Publication number
CH80551A
CH80551A CH80551A CH80551DA CH80551A CH 80551 A CH80551 A CH 80551A CH 80551 A CH80551 A CH 80551A CH 80551D A CH80551D A CH 80551DA CH 80551 A CH80551 A CH 80551A
Authority
CH
Switzerland
Prior art keywords
dials
improvement
indicator elements
luminous indicator
hands etc
Prior art date
Application number
CH80551A
Other languages
English (en)
Inventor
Frank Armstrong
Hans Wilsdorf
Original Assignee
Frank Armstrong
Hans Wilsdorf
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 Frank Armstrong, Hans Wilsdorf filed Critical Frank Armstrong
Publication of CH80551A publication Critical patent/CH80551A/fr

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)
CH80551A 1918-09-30 1918-09-30 Perfectionnement aux éléments indicateurs lumineux, tels que cadrans, aiguilles etc. CH80551A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH80551T 1918-09-30

Publications (1)

Publication Number Publication Date
CH80551A true CH80551A (fr) 1919-03-17

Family

ID=4334423

Family Applications (1)

Application Number Title Priority Date Filing Date
CH80551A CH80551A (fr) 1918-09-30 1918-09-30 Perfectionnement aux éléments indicateurs lumineux, tels que cadrans, aiguilles etc.

Country Status (1)

Country Link
CH (1) CH80551A (fr)

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