4. Electric lamp and discharge devices
  5. With optical device or special ray transmissive envelope
  6. Polarizer or special ray transmission
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Heat mirror for incandescent lamp

Electric lamp and discharge devices – With optical device or special ray transmissive envelope – Polarizer or special ray transmission
Patent

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High efficiency light source utilizing co-generating sources

Electric lamp and discharge devices – With optical device or special ray transmissive envelope – Polarizer or special ray transmission
Reexamination Certificate

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High pressure mercury vapor discharge lamp

Electric lamp and discharge devices – With optical device or special ray transmissive envelope – Polarizer or special ray transmission
Patent

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High pressure sodium vapor discharge lamp

Electric lamp and discharge devices – With optical device or special ray transmissive envelope – Polarizer or special ray transmission
Patent

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High temperature lamps having UV absorbing quartz envelope

Electric lamp and discharge devices – With optical device or special ray transmissive envelope – Polarizer or special ray transmission
Patent

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