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Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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Detection and protection circuit for fluorescent lamps operating

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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Device for accurately detecting end of usage lifetime of a disch

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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Device for protecting a ballast circuit from excess voltage

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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Dimmer having a power supply monitoring circuit

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

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Dimmer having a power supply monitoring circuit

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

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Discharge lamp circuit which limits ignition voltage across a se

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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Electric discharge machining power source unit for electric disc

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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Electronic ballast circuit for fluorescent lamps

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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Electronic ballast having a stable reference voltage and a...

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

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Electronic ballast with inverter protection and relamping circui

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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Electronic Ballast with inverter protection circuit

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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Electronic ballast with inverter protection circuit

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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Electronic ballast with over-voltage protection

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

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Electronic fluorescent lamp ballasting system

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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End of lamp life or false lamp detection circuit for an electron

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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EOL detection with integrated filament interrogation

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

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Floating IC driven dimming ballast

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

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Florescent lamp ballast control for zero -voltage switching oper

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
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Flourescent lamp circuit employing a reset transistor coupled to

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