[ Floors and ceilings of industrial furnaces made of refractory ceramic ]

'ceil':3 'ceram':10 'floor':1 'furnac':6 'industri':5 'made':7 'refractori':9

Refractory ceramic shapes; refractory ceramic construction materials, namely, bricks, slabs [ , inner tubes, stopper heads, nozzle-holder bricks, bricks for gas scrubbing, casting nozzles for metallurgical containers, casting gutters, distributing channels ]

'brick':9,18,19 'cast':23,28 'ceram':2,5 'channel':31 'construct':6 'contain':27 'distribut':30 'gas':21 'gutter':29 'head':14 'holder':17 'inner':11 'materi':7 'metallurg':26 'name':8 'nozzl':16,24 'nozzle-hold':15 'refractori':1,4 'scrub':22 'shape':3 'slab':10 'stopper':13 'tube':12

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