| 摘要 |
<p>817,084. Coloured stone. NAIRN, R. L. Jan. 20, 1958 [Jan. 29, 1957], No. 3069/57. Class 22. [Also in Group X]. Flooring material comprises a matrix 1 of cement, wood, gypsum and calcium carbonate together with a binder or a hardener or both, in which matrix are embedded pieces 3 of the same composition but of a different colour or colours. The embedded pieces themselves may be patterned and include inserts 5 of the same colour as the matrix 1. The composition may include rubber latex as a binder and ground marble as a filler, or magnesium chloride as a binder with magnesite sawdust pulp fillers and pigments.</p> |
