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GB976412A
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Improvements in flashing light warning devices
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GB585813A
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Improvements in devices for delivering quantities of powdered material
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GB552172A
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Improvements in or relating to heating and ventilating systems
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GB548027A
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An improved method of manufacturing sheets or panels of transparent material with embedded layers of opaque or semi-opaque material
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GB540898A
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Improvements in fluorescent lighting fittings
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GB535445A
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Improvements in or relating to lighting fittings for use with tubular fluorescent discharge lamps and the like
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GB527766A
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New or improved means for obtaining colour effects on lighting fittings
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GB526357A
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Improvements in or relating to trough lighting fitting
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GB526756A
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Improvements in or relating to adjustable reflectors
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GB524573A
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Improvements in or relating to lighting fittings
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GB516522A
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Improvements in or relating to indirect lighting fittings
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GB512913A
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A new or improved convertible light reflector or shade
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GB505432A
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Improvements in or relating to the use of fluorescent materials
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GB499136A
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Improvements in or relating to vitreous enamelling
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GB479220A
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Improvements in or relating to reflectors for use with mercury vapour discharge and other lamps
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GB448653A
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Improvements in combined television and sound reproducing apparatus
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GB204170A
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A new or improved paper clip or holder
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