4. Hydraulic and earth engineering
  5. Fluid control, treatment, or containment
  6. Flow control

Douglas Grant

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Plant supporting system

Plant husbandry – Receptacle for growing medium – Hanging support
Patent

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Rain gutter joint

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Retrofit drip ring for a hydraulic piston assembly

Expansible chamber devices – With removal conduit for liquid seepage from expansible chamber
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1691552

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