Full Title

Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs (scaffolds, shutterings E04G; structures specially adapted for buildings for special purposes, general layout of buildings, e.g. modular co-ordination, E04H) > Connections for building structures in general > Connecting devices specially adapted for embedding in concrete or masonry ( spacers for cavity walls E04B2/30, E04B2/44; connectors for reinforcing elements E04C5/16; fastening frames to the border of openings E06B1/56)