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US2784338A
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Incandescent electric lamps
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GB744339A
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Improvements relating to electric dry cells
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GB749880A
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Improvements relating to the mounting of lanterns for tubular electric lamps
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GB755020A
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Improvements relating to electric semi-conductor devices
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GB756446A
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Improvements relating to electric semi-conductor devices such as crystal diodes and crystal triodes
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GB760120A
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Improvements relating to light reflectors
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GB745572A
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Improvements relating to the manufacture of fluorescent materials
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GB757914A
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Improvements relating to crystal contact devices
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GB738793A
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Improvements relating to electrical excess voltage protective devices
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GB735908A
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Improvements relating to electric protective cut-out arrangements
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GB738412A
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Improvements relating to electric lamps for use in flash photography
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GB744979A
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Improvements relating to fluorescent materials
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GB745560A
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Improvements relating to fluorescent materials
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GB723932A
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Improvements relating to circuit arrangements for starting and operating hot-cathodeelectric discharge lamps
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GB745046A
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Improvements relating to thermionic cathodes and to electric discharge lamps using the same
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GB729819A
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Improvements in or relating to emissive cathodes
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GB696846A
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Improvements relating to high temperature electric lamps
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GB721998A
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Improvements relating to fluorescent materials
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GB701798A
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Improved starting arrangements for electric discharge lamps
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GB693638A
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Improvements relating to fluorescent materials
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