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Enclosed pump switch level control system

Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Reexamination Certificate

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Enclosed sump pump

Pumps – Condition responsive control of pump drive motor – Plural pumps having separate drive motors – supply sources,...
Patent

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Enclosed sump pump

Pumps – Condition responsive control of pump drive motor – With plural separate drive motor controlling elements
Patent

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End of stroke detection for electromagnetic pump

Pumps – Condition responsive control of pump drive motor – By control of electric or magnetic drive motor
Reexamination Certificate

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Energy store circuit for controlling rotor rotation

Pumps – Condition responsive control of pump drive motor – By control of electric or magnetic drive motor
Reexamination Certificate

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Energy store circuit for controlling rotor rotation

Pumps – Condition responsive control of pump drive motor – By control of electric or magnetic drive motor
Reexamination Certificate

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Engine-powered air compressor with a controller for low oil...

Pumps – Condition responsive control of pump drive motor – Responsive to pump lubricant – sealant – or coolant condition
Reexamination Certificate

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Engine-powered air compressor with a controller for low oil...

Pumps – Condition responsive control of pump drive motor – Responsive to pump lubricant – sealant – or coolant condition
Reexamination Certificate

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Evacuating apparatus

Pumps – Condition responsive control of pump drive motor – By control of electric or magnetic drive motor
Reexamination Certificate

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Evacuating unit with reduced diameter exhaust duct

Pumps – Condition responsive control of pump drive motor – Plural pumps having separate drive motors – supply sources,...
Reexamination Certificate

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Evaporative coller pump apparatus

Pumps – Condition responsive control of pump drive motor – Having timer or delay means
Patent

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Excess temperature and starting safety device in pumps having pe

Pumps – Condition responsive control of pump drive motor – Responsive to pump or pump fluid temperature
Patent

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Explosion proof compressor and a method for explosion proofing a

Pumps – Condition responsive control of pump drive motor – By stopping pump in response to leakage into or from system
Patent

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External tank level control system

Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent

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