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blasting (505832) 505832
heating (505832) 505832
lighting (505832) 505832
mechanical engineering (505832) 505832
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non-portable lighting devices (505124) 505124
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vehicle lighting devices specially adapted for vehicleexteriors (505124) 505124
functional features or details of lighting devices or systemsthereof (391162) 391162
structural combinations of lighting devices with otherarticles, not otherwise provided for (391162) 391162
indexing scheme associated with subclasses f21k, f21l, f21sand f21v, relating to theform or the kind of the light sources or of the colour of thelight emitted (233417) 233417
indexing scheme associated with subclasses f21k, f21l, f21sand f21v, relating to usesor applications of lighting devices or systems (118596) 118596
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vehicles in general (47240) 47240
arrangement of signalling or lighting devices, the mounting orsupporting thereof or circuits therefor, for vehicles ingeneral (44931) 44931
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devices or arrangements, the optical operation of which ismodified by changing the optical properties of the medium of thedevices or arrangements for the control of the intensity,colour, phase, polarisation or direction of light, e.g.switching, gating, modulating or demodulating (28833) 28833
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measuring (5853) 5853
testing (5853) 5853
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ranges (5742) 5742
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construction of roads, railways, or bridges (5399) 5399
additional work, such as equipping roads or the constructionof platforms, helicopter landing stages, signs, snow fences, orthe like (4834) 4834
alarm systems (4298) 4298
order telegraphs (4298) 4298
signalling or calling systems (4298) 4298
circuit arrangements or systems for supplying or distributingelectric power (4220) 4220
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09/2019
To provide a lighting device including a light guide panel making unevenness in processing of a prism hard to be visibly recognized by human visual... 
MECHANICAL ENGINEERING | SYSTEMS THEREOF | WEAPONS | BLASTING | NON-PORTABLE LIGHTING DEVICES | HEATING | VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS | LIGHTING
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