CPC Subgroup
E01C 1/007 Full Title
Design or layout of roads, e.g. for noise abatement, for gas absorption (design or layout of sports grounds A63C19/00; design or layout of airfields B64F )
E01C 1/007 Design or layout of roads, e.g. for noise abatement, for gas absorption (design or layout of sports grounds A63C19/00; design or layout of airfields B64F )