4. Liquid purification or separation
  5. Tangential flow or centrifugal fluid action

John F. Duvall

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Brake shoe and production method therefor

Brakes – Elements – Shoes
Patent

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Facemask protection device

Apparel – Guard or protector – For wearer's head
Patent

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Hand grip for a wheel chock

Transportation – Parts – accessories and attachments for vehicles not... – Wheel chock or stop
Design Patent

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Hydrocyclone construction

Liquid purification or separation – Tangential flow or centrifugal fluid action
Patent

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Modular cable protector having removable wheel chair ramps

Bridges – Gangway – ramp – or dock leveler
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1058836

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