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GB864671A
|
|
Improvements in or relating to display arrangements, for example for advertising signs
|
|
US2881345A
|
|
Low pressure mercury vapour electric discharge lamps
|
|
GB734393A
|
|
Improvements in or relating to box signs
|
|
GB767395A
|
|
Improvements in or relating to low pressure mercury vapour electric discharge tubes for emitting light
|
|
GB708302A
|
|
Improvements in or relating to illuminated box signs
|
|
GB643602A
|
|
Improvements in electric circuit arrangements and fittings for high-tension electricdischarge lamps
|
|
GB612954A
|
|
Improvements in and relating to housings for high voltage electrical apparatus
|
|
GB609554A
|
|
Improvements in or relating to caps for electric lamps and discharge devices
|
|
GB571504A
|
|
Improvements in multiple burettes
|
|
US2257797A
|
|
Electric protective device for luminous electric discharge tube systems
|
|
GB514585A
|
|
Improvements in and relating to housings for high voltage electrical apparatus
|
|
GB510987A
|
|
Improvements in or relating to supply circuits for luminous electric discharge lampsand tubes
|
|
GB515174A
|
|
Improvements in electric circuit arrangements for operating electric discharge devices
|
|
GB515216A
|
|
Improvements in and relating to electric protective arrangements more particularly for luminious electric discharge tube systems
|
|
GB489241A
|
|
Improvements in and relating to connecting devices for luminous electric discharge tubes
|
|
GB489186A
|
|
Improvements in and relating to systems of illumination
|
|
GB479684A
|
|
Improvements in and relating to insulation testing and measuring apparatus
|
|
GB483594A
|
|
Improvements in or relating to luminous electric discharge tubes
|
|
GB470853A
|
|
Improvements in illuminating devices
|
|
GB463454A
|
|
Improvements in electric signs
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