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Tantala-silica interference filters and lamps using same

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

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Tantala-silica interference filters and lamps using same

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

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Tantala-silica interference filters and lamps using same

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

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Thermally-conductive plastic articles having light...

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

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Transparent heat conserving coating for metal halide arc tubes

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

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Tube, with bore having convex sides, for emitting...

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

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Tungsten-halogen incandescent and metal vapor discharge lamps an

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

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