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The Maxim Electric Light and Power Co., Philadelphia. (1882)
United States Electric Lighting Company · United States Electric Lighting Company · leaf 19
Indicator. lamps are again placed in circuit. whether the circuit in the building is on or off … Cat-off Boi (ojElectricity · Lighting · Power supply
Internet Archive · Building Technology Heritage Library · Public Domain Mark 1.0. Free to use for anything.
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