4. Hydraulic and earth engineering
  5. Drainage or irrigation
  6. Control means responsive to sensed condition

Donald R. Justice

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Adjustable king-sized mattress

Beds – Sofa bed – Reverting back
Patent

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Barrier wall installation system

Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent

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Corrugated drainage tube

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
Patent

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Coupling device

Pipe joints or couplings – Packed – Sleeve
Patent

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Horizontal dewatering system

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
Patent

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Profile ID: LFUS-PAI-P-223415

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