Lamp-bulb, electric, 2 filaments
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LicenseLamp-bulb, electric, 2 filaments, 220v, type Hylo', with E.S
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Lamp-bulb, electric, 2 filaments, 220v, type "Hylo", with E.S. Cap and spring switch for dim light, by Phelps, U.S.A., c.1905
