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Radiotechnique SA
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Radiotechnique SA
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Publication of FR673381ApublicationCriticalpatent/FR673381A/fr
H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
H01J9/38—Exhausting, degassing, filling, or cleaning vessels
H01J9/385—Exhausting vessels
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FR673381D1928-08-031928-08-03Perfectionnements dans la fabrication des lampes avec cathodes à oxydes
ExpiredFR673381A
(fr)