4. Electric lamp and discharge devices: systems
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Lamp controller with lamp status detection and safety circuitry

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
Patent

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Lamp current balancing device

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit
Reexamination Certificate

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Lamp current balancing topologies

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Transformer in the supply circuit
Reexamination Certificate

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Lamp current balancing topologies

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Transformer in the supply circuit
Reexamination Certificate

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Lamp current control circuit

Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate

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Lamp current control device

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Plural load device systems
Reexamination Certificate

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Lamp current control using profile synthesizer

Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate

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Lamp device and a display apparatus using the same

Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Plural circuit elements
Patent

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Lamp device and a method of regulating the lamp intensity

Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Discharge device load
Reexamination Certificate

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Lamp dimmer

Electric lamp and discharge devices: systems – Regulation of the control current and/or potential applied...
Patent

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Lamp dimmer circuit utilizing opto-isolators

Electric lamp and discharge devices: systems – Current and/or voltage regulation
Patent

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Lamp dimmer control with integral ambient sensor

Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Radiant energy controlled regulation of the current supply...
Patent

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Lamp dimming device

Electric lamp and discharge devices: systems – Plural load device systems – Plural discharge device loads
Patent

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Lamp dimming system and methods

Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate

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Lamp drive circuit

Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Patent

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Lamp drive circuit for driving a number of lamps and...

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Transformer in the supply circuit
Reexamination Certificate

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Lamp drive device of projector

Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Reexamination Certificate

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Lamp drive device of projector

Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Reexamination Certificate

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Lamp driven voltage transformation and ballasting system

Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Patent

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Lamp driver

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – With power factor control device
Reexamination Certificate

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