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.)
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 filedfiledCritical
Application grantedgrantedCritical
Publication of FR821817ApublicationCriticalpatent/FR821817A/fr
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)
FR821817D1936-08-181936-08-18Perfectionnements aux cadrans et échelles lumineux et objets et appareils munis de ces cadrans ou échelles
ExpiredFR821817A
(fr)