DIFF Subgroup
E04B 9/247 Full Title
Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation (ceilings used as forms for making floors E04B5/00; coverings or linings for ceilings E04F13/00) > Connection of slabs, sheets or the like to the supporting construction > with the slabs, sheets or the like positioned on , or held against horizontal flanges of the supporting construction