4. Electric lamp and discharge devices: systems
  5. Automatic substitution of the power supply
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Central battery emergency lighting system

Electric lamp and discharge devices: systems – Automatic substitution of the power supply
Reexamination Certificate

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Combination emergency light and nightlight

Electric lamp and discharge devices: systems – Automatic substitution of the power supply
Reexamination Certificate

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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 apparatus for permitting operation of an ac-powered lamp

Electric lamp and discharge devices: systems – Automatic substitution of the power supply
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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Control unit for controlling a strobe light or the like

Electric lamp and discharge devices: systems – Automatic substitution of the power supply
Patent

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