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Publication of LU68912A1publicationCriticalpatent/LU68912A1/xx
E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
E04F15/00—Flooring
E04F15/02—Flooring or floor layers composed of a number of similar elements
E04F15/08—Flooring or floor layers composed of a number of similar elements only of stone or stone-like material, e.g. ceramics, concrete; of glass or with a top layer of stone or stone-like material, e.g. ceramics, concrete or glass