4. Hydraulic and earth engineering
  5. Earth treatment or control

Hansruedi Spiess

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Arrangement for draining liquid collecting on a ground surface

Hydraulic and earth engineering – Drainage or irrigation
Patent

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Covering for a ground opening

Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent

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Covering for a ground opening

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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Covering for a ground opening

Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Frame for forming coverings on ground openings

Hydraulic and earth engineering – Earth treatment or control
Patent

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Profile ID: LFUS-PAI-P-323845

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