4. Electric lamp and discharge devices: systems
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Ultra violet ray generator by means of microwave excitation

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent

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Ultraviolet fluorescent lamp with unique drive circuit

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

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Unitary ballast structure for operating four fluorescent lamps

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

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Universal input voltage device

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

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Universal input voltage device

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

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Use of arc straightening in HID lamps operated at VHF...

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

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Use of silicon to extend useful life of metal halide discharge l

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent

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Use of silver and nickel silicide to control iodine level in ele

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent

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Using a magnetic field to locate an amalgam in an electrodeless

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent

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