E04F13/07
composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
E04F13/07
composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
E04F13/08
composed of a plurality of similar covering or lining elements,
E04F13/08
composed of a plurality of similar covering or lining elements,
E04F13/0862
composed of a number of elements which are identical or not, e.g. carried by a common web, support plate or grid
E04F13/0862
composed of a number of elements which are identical or not, e.g. carried by a common web, support plate or grid