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US6568654B1
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Positive locking valve control device
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US4868727A
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Light fixture with integral reflector and socket shield
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US5019959A
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Ballast circuit
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US4904903A
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Ballast for high intensity discharge lamps
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US4777410A
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Ballast striker circuit
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US4789810A
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Photocell temperature switch for high intensity discharge lamp fixture
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EP0323452A1
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Solid state ballast for high intensity discharge lamps having constant line and lamp wattage
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WO8707996A1
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A ballast for systems having multiple high-intensity discharge lamps
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US4999547A
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Ballast for high pressure sodium lamps having constant line and lamp wattage
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US4686428A
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High intensity discharge lamp self-adjusting ballast system with current limiters and a current feedback loop
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US4682084A
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High intensity discharge lamp self-adjusting ballast system sensitive to the radiant energy or heat of the lamp
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