| 摘要 |
<p>1,062,806. Drip-channels for concrete structures. K. BUHLER. June 18, 1965 [June 23, 1964], No. 26005/65. Heading E1W. The groove of a water ridge for a concrete building element is formed by a #-shaped strip 10 of synthetic plastics material which is attached to the mould 17 whilst the element is being cast. Nails 19 by means of which the strip 10 is secured to the mould readily pull away from the strip when the mould is removed from the element.</p> |
