| 摘要 |
<p>1,022,678. Furnace roofs. JOHN G. STEIN & CO. Ltd. Nov. 11, 1964 [Nov. 18, 1963], No. 45410/63. Heading F4B. The roof of an electric-arc furnace is composed of a plurality of suspended bricks forming frames M, C between which are placed packing bricks U. The electrodes 9 have shaped packing of rammed or plastic material 13.</p> |
