LandOfFree - US Patents - Listing for Electric lamp and discharge devices: systems,Pulsating or a.c. supply,With power factor control device

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Magnetic feedback ballast circuit for fluorescent lamp

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

Patent

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Method and apparatus for a protective ballast circuit

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

Reexamination Certificate

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Method and apparatus for controlling current supplied to...

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

Reexamination Certificate

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Method and apparatus for controlling power delivered to a fluore

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

Patent

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Method and apparatus for preventing instabilities in...

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

Reexamination Certificate

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Method and cell for controlling the power factor of a power...

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

Reexamination Certificate

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Method of controlling cathode voltage with low lamp's arc...

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

Reexamination Certificate

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Method of forming an LED system

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

Reexamination Certificate

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Methods and apparatus for providing a controllably variable...

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

Reexamination Certificate

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Modified valley fill high power factor correction ballast

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

Patent

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