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Radiotechnique SA
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Radiotechnique SA
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Publication of FR664322ApublicationCriticalpatent/FR664322A/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
H01K1/56—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering characterised by the material of the getter
FR664322D1928-02-291928-02-29Perfectionnements dans la fabrication des lampes à incandescence
ExpiredFR664322A
(fr)