Manhole shafts or other inspection chambers (in general E02D29/12); Snow-filling openings; accessories (covers or frames for manholes or the like E02D29/14)

Full Title

Sewerage structures > Manhole shafts or other inspection chambers (in general E02D29/12); Snow-filling openings; accessories (covers or frames for manholes or the like E02D29/14)

Child Classifications

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• E03F 2005/028
• E03F 5/021
• E03F 5/022
• E03F 5/024
• E03F 5/025
• E03F 5/027