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 )

Child Classifications

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• E01C 1/002
• E01C 1/005
• E01C 1/007
• E01C 1/02 Crossings, junctions or interconnections between roads on the same level
• E01C 1/04 Road crossings on different levels; Interconnections between roads on different levels