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Osa Participations Industrielles SA
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Osa Participations Industrielles SA
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Publication of FR658675ApublicationCriticalpatent/FR658675A/fr
H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
H01K3/02—Manufacture of incandescent bodies
H01K3/04—Machines therefor
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01K—ELECTRIC INCANDESCENT LAMPS
H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
H01K3/02—Manufacture of incandescent bodies
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FR658675D1927-11-021928-08-07Procédé pour la fabrication d'hélices en fil métallique pour lampes électriques à incandescence et tubes de décharge
ExpiredFR658675A
(fr)
Procédé et appareil pour la fabrication de corps éclairants en tungstène de forme hélicoïde et composés de cristaux longs pour lampes à incandescence électriques et produits résultant de ce procédé