4. Electric lamp and discharge devices
  5. With gas or vapor
  6. Incandescent filament lamp
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Radiant energy incandescent lamp

Electric lamp and discharge devices – With gas or vapor – Incandescent filament lamp
Patent

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Radiation emitting structures including photonic crystals

Electric lamp and discharge devices – With gas or vapor – Incandescent filament lamp
Reexamination Certificate

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Radiation emitting structures including photonic crystals

Electric lamp and discharge devices – With gas or vapor – Incandescent filament lamp
Reexamination Certificate

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Rotating liquefied filament for high efficiency incandescent...

Electric lamp and discharge devices – With gas or vapor – Incandescent filament lamp
Reexamination Certificate

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Rounded end halogen lamp with exhaust tube having different glas

Electric lamp and discharge devices – With gas or vapor – Incandescent filament lamp
Patent

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