| 摘要 |
<p>1,256,363. Laminated floor coverings. ROCKWOOL AB. 3 Dec., 1968 [7 Dec., 1967], No. 57241/68. Heading B5N. [Also in Division E1] Flooring comprises a backing layer of strips 15, 16 of laminated mineral wool with the laminations extending vertically and an upper layer of tongued arid grooved wood boards 10 and 11. The mineral fibre layer may be laid separately or may be glued to the back of individual wood boards to form composite laminated blocks. The upper layer may be laminated wood or chipboard.</p> |
