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Combination incandescent and solar-electric light bulb with auto

Electric lamp and discharge devices: systems – Automatic substitution of the power supply – With load device or electrode substitution
Patent

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Control circuit and system for providing emergency lighting

Electric lamp and discharge devices: systems – Automatic substitution of the power supply – With load device or electrode substitution
Patent

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Emergency lighting system

Electric lamp and discharge devices: systems – Automatic substitution of the power supply – With load device or electrode substitution
Patent

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Lamp switching

Electric lamp and discharge devices: systems – Automatic substitution of the power supply – With load device or electrode substitution
Patent

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Luminaire converter

Electric lamp and discharge devices: systems – Automatic substitution of the power supply – With load device or electrode substitution
Patent

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Power control arrangement, as for a flashlight

Electric lamp and discharge devices: systems – Automatic substitution of the power supply – With load device or electrode substitution
Reexamination Certificate

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Rechargeable lamp assembly, mounting unit, and circuit therefor

Electric lamp and discharge devices: systems – Automatic substitution of the power supply – With load device or electrode substitution
Patent

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Uninterrupted desk lamp

Electric lamp and discharge devices: systems – Automatic substitution of the power supply – With load device or electrode substitution
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Utility emergency lamp and solid state switching and battery cha

Electric lamp and discharge devices: systems – Automatic substitution of the power supply – With load device or electrode substitution
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