4. Building units and construction elements
  5. Prefabricated unit
  6. Underground service vault

Brian E. Brown

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Pre-cast concrete unit for manholes

Building units and construction elements – Prefabricated unit – Underground service vault
Patent

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Pre-cast concrete unit for manholes

Building units and construction elements – Prefabricated unit – Underground service vault
Patent

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Pre-cast units for sewer construction

Static structures (e.g. – buildings) – With entrance for persons or objects in horizontal or... – With additional enclosure structure; e.g. – manhole
Patent

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Profile ID: LFUS-PAI-P-747554

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