Kerb-and-gutter structures

Official title: {Kerb-and-gutter structures; Kerbs with drainage openings channel or conduits, e.g. with out- or inlets, with integral gutter or with channel formed into the kerb (gutters, subsurface channels per se E01C11/227; gullies adapted to be used with kerbs, gully gratings E03F5/04, E03F5/06); Kerbs adapted to house cables or pipes, or to form conduits}

E01C11/223 (Kerb-and-gutter structures) appears on 40 US grants and 41 published applications in this corpus.