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Osa Participations Industrielles SA
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Osa Participations Industrielles SA
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Application grantedgrantedCritical
Publication of FR619032ApublicationCriticalpatent/FR619032A/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
FR619032D1925-11-071926-07-17Substance absorbante ou épuratrice pour lampes électriques à incandescence et vases analogues en verrc
ExpiredFR619032A
(fr)