72323440
Apr 2, 1969
Oct 26, 1971
DYNAMIT NOBEL AKTIENGESELLSCHAFT
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ELECTRICALLY FUSED METALLIC OXIDES AS WELL AS MIXTURES AND CHEMICAL COMPOUNDS THEREOF
HIGHLY REFRACTORY-SHAPED BRICKS FUSION-CAST FROM THE AFOREMENTIONED METALLIC OXIDES
PIPES MADE FROM THE AFOREMENTIONED METALLIC OXIDES