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GB2042806A
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Starter switches for discharge lamps
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GB2039171A
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Discharge lamp starting circuit
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GB1596161A
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Starting of high pressure sodium high presure mercury halide and low pressure sodium discharge lamps by means of glow type starter switches
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GB1575745A
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Starting means for high pressure sodium and high pressure mercury halide discharge lamps
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GB1496918A
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Low pressure discharge lamp starting and operating circui
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GB1466843A
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Ballast inductor unit for operating low pressure discharge lamps
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GB1500569A
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Low pressure sodium discharge lamp starting and operating circuit
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GB1485918A
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Starting and operating circuits for high pressure sodium discharge lamps
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GB1464225A
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Starting and operating means for high pressure mercury halide discharge lamps
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GB1493330A
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Discharge lamp operating circuit
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GB1452472A
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Low pressure sodium discharge lamps
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GB1466215A
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Electric circuit arrangement for operating a high pressure sodium discharge lamp
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GB1461055A
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Discharge lamps
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