4. Fluid handling
  5. Line condition change responsive valves
  6. Pilot or servo controlled

Dwight N. Johnson

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Adjustable vacuum breaker fill valve

Fluid handling – Processes – With control of flow by a condition or characteristic of a...
Patent

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Adjustable vacuum breaker fill valve

Fluid handling – Liquid level responsive or maintaining systems – By float controlled valve
Patent

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Apparatus for adding fertilizer to water in an underground...

Dispensing – Automatic control – By weight – volume or pressure of a second dispensed material
Reexamination Certificate

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Back jet flush toilet systems and methods

Baths – closets – sinks – and spittoons – Flush closet – Bowl
Patent

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Back jet flush toilet systems and methods

Fluid handling – Liquid level responsive or maintaining systems – By weight of accumulated fluid
Patent

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Profile ID: LFUS-PAI-P-173980

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