FR471603A -
Process for the regeneration of incandescent lamps in which a new charcoal or metal filament is substituted, in known manner, for the old spent filament
- Google Patents
Process for the regeneration of incandescent lamps in which a new charcoal or metal filament is substituted, in known manner, for the old spent filament
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ALFRED ERMRICH JUN
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ALFRED ERMRICH JUN
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Application filed by ALFRED ERMRICH JUNfiledCriticalALFRED ERMRICH JUN
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Publication of FR471603ApublicationCriticalpatent/FR471603A/en
H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
H01K3/30—Repairing or regenerating used or defective lamps
FR471603D1914-05-021914-05-02
Process for the regeneration of incandescent lamps in which a new charcoal or metal filament is substituted, in known manner, for the old spent filament
ExpiredFR471603A
(en)
Process for the regeneration of incandescent lamps in which a new charcoal or metal filament is substituted, in known manner, for the old spent filament
Process for the regeneration of incandescent lamps in which a new charcoal or metal filament is substituted, in known manner, for the old spent filament