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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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FR420982D1909-12-291910-09-30Procédé de fabrication de filaments pour lampes électriques à incandescence et à filaments métalliques
ExpiredFR420982A
(fr)