FR839180A - Procédé de fabrication de pieds de lampes en verre dur ou verre de quartz, et de lampes à incandescence en utilisant ceux-ci
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Procédé de fabrication de pieds de lampes en verre dur ou verre de quartz, et de lampes à incandescence en utilisant ceux-ci
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Ver Gluehlampen & Elek AG
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Ver Gluehlampen & Elek AG
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H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
H01K3/20—Sealing-in wires directly into the envelope
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Engineering & Computer Science
(AREA)
Manufacturing & Machinery
(AREA)
Vessels And Coating Films For Discharge Lamps
(AREA)
FR839180D1937-06-251938-06-11Procédé de fabrication de pieds de lampes en verre dur ou verre de quartz, et de lampes à incandescence en utilisant ceux-ci
ExpiredFR839180A
(fr)
Procédé de formation de revêtements d'oxydes en particulier une couche diffusant la lumière, par exemple à l'intérieur des ampoules de lampes électriques