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.)
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Compagnie des Lampes
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Compagnie des Lampes
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Filing date
Publication date
Application filed by Compagnie des LampesfiledCriticalCompagnie des Lampes
Application grantedgrantedCritical
Publication of FR1043879ApublicationCriticalpatent/FR1043879A/en
H01J61/84—Lamps with discharge constricted by high pressure
H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
FR1043879D1950-10-181951-10-16
Improvements to discharge tubes
ExpiredFR1043879A
(en)