4. Hydraulic and earth engineering
  5. Earth treatment or control
  6. Shoring, bracing, or cave-in prevention

Garry R. Perkins

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Combined keylock facing panel and H-shaped retaining wall block

Building units and construction elements – Architectural stock material – Construction block or brick type
Patent

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Keylock facing panel

Building units and construction elements – Architectural stock material – Construction block or brick type
Patent

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Masonry block retaining wall with attached keylock facing panels

Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent

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Plastic block retaining wall with attached keylock facing panels

Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent

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Profile ID: LFUS-PAI-P-443263

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