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SIF Societe Independante de Telegraphie Sans Fil
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SIF Societe Independante de Telegraphie Sans Fil
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Application filed by SIF Societe Independante de Telegraphie Sans FilfiledCriticalSIF Societe Independante de Telegraphie Sans Fil
Application grantedgrantedCritical
Publication of FR930943ApublicationCriticalpatent/FR930943A/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
H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
H01J9/32—Sealing leading-in conductors
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Engineering & Computer Science
(AREA)
Manufacturing & Machinery
(AREA)
FR930943D1946-07-221946-07-22Perfectionnements à la fabrication des lampes électriques
ExpiredFR930943A
(fr)