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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Application filed by Compagnie des LampesfiledCriticalCompagnie des Lampes
Application grantedgrantedCritical
Publication of FR653508ApublicationCriticalpatent/FR653508A/fr
H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
FR653508D1927-04-291928-04-27Perfectionnements à la fabrication des lampes à incandescence et en particulier des lampes à atmosphère gazeuse
ExpiredFR653508A
(fr)