| 摘要 |
<p>674,303. Composite blocks. DURRER, A. July 25, 1950 [July 27, 1949], No. 18501/50. Class 145 (ii). [Also in Group X] Slabs for forming a wall or floor covering each consist of a number of wood blocks 1 mounted side by side on and attached to an underlayer 2 of cork, the thickness of the underlayer being less than that of the blocks. The Figure shows a floor made up of the slabs which are laid sideby-side on a foundation 3.</p> |
