4. Electric lamp and discharge devices
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Lamp having a glass lamp vessel and Glass (Na-Ca-Ba-SiO.sub.2 wi

Electric lamp and discharge devices – With gas or vapor – Envelope composition
Patent

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Lamp with discharge vessel made of densely sintered translucent

Electric lamp and discharge devices – With gas or vapor – Envelope composition
Patent

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Lead and arsenic free borosilicate glass and lamp containing sam

Electric lamp and discharge devices – With gas or vapor – Envelope composition
Patent

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Lead and arsenic free, solarization resistant glass

Electric lamp and discharge devices – With gas or vapor – Envelope composition
Patent

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Lead-free amber-colored electric lamp

Electric lamp and discharge devices – With gas or vapor – Envelope composition
Reexamination Certificate

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Light bulb having wide angle light dispersion using...

Electric lamp and discharge devices – With gas or vapor – Envelope composition
Reexamination Certificate

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Lighting device, components therefor and method of manufacture

Electric lamp and discharge devices – With gas or vapor – Envelope composition
Patent

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Long life halogen cycle incandescent lamp and glass envelope...

Electric lamp and discharge devices – With gas or vapor – Envelope composition
Reexamination Certificate

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Low sodium permeability glass

Electric lamp and discharge devices – With gas or vapor – Envelope composition
Patent

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