| 摘要 |
1,150,789. Bricks. C. LEUTHOLD and F. LEUTHOLD. 5 Oct., 1967 [11 Oct., 1966], No. 45398/67. Heading E1B. A lead brick for protective screens comprises parallel front and rear faces 1, 2, convex and concave end surfaces 3 and 5 respectively bounded by flat shoulders 4, 4' and 6, 6', and convex and concave upper and lower faces 7 and (11) respectively bounded by flat shoulders 8, 8' and (12, 12') and having central recesses 9 and 13 defined by edges 10, 10 and (14, 14') respectively. Locating lugs 19 or 20 may be provided on the lower face to correspond with slots in the upper face. Arcuate or angle bricks may be formed. |
