E
FIXED CONSTRUCTIONS
E04
BUILDING
E04F
FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
E04F13/00
Coverings or linings, e.g. for walls or ceilings
E04F13/07
composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
E04F13/21
Fastening means specially adapted for covering or lining elements