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E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
E04F11/02—Stairways; Layouts thereof
E04F11/104—Treads
E04F11/116—Treads of stone, concrete or like material or with an upper layer of stone or stone like material, e.g. ceramics, concrete; of glass or with an upper layer of glass
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FR857509D1938-07-131939-07-08Perfectionnements à la construction des escaliers
ExpiredFR857509A
(fr)