Semi-conductors; photovoltaic cells; glass covered with an electrical conductor; fluorescent screens; electronic notice boards; neon signs; electro-dynamic apparatus for the remote control of signals; LED board for displaying messages automatically; traffic light apparatus, namely, a signaling device

'apparatus':22,37 'automat':34 'board':16,30 'cell':5 'conductor':3,11 'control':26 'cover':7 'devic':41 'display':32 'dynam':21 'electr':10 'electro':20 'electro-dynam':19 'electron':14 'fluoresc':12 'glass':6 'led':29 'light':36 'messag':33 'name':38 'neon':17 'notic':15 'photovolta':4 'remot':25 'screen':13 'semi':2 'semi-conductor':1 'sign':18 'signal':28,40 'traffic':35

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