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Emergency lighting system with a DC sensing load relay

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

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Emergency lighting system with automatic diagnostic test

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

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Emergency lighting test system and method

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

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Emergency power supply

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

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Emergency/normal lighting circuit for a gaseous discharge lamp

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

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Exit illuminating system

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

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Fail-safe lighting system with load shedding and dimming

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

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Fail-safe uninterruptible lighting system

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

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Fail-safe uninterruptible lighting system

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

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Flashlight

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

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Fluorescent ballast with emergency lighting capability

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

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Fluorescent emergency ballast self test circuit

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

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Fluorescent lamp assembly

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

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Fluorescent lamp ballast operable from two different power suppl

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

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Force field anti-noise-induction system

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

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Illumination unit for normal and emergency operation

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

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Intelligent electrical switching devices

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

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Inverter circuit protection

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

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Lamp control circuit having a brightness condition controller ha

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