4. Pumps
  5. Motor driven
  6. Electric or magnetic motor

Karl O. Niedermeyer

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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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Enclosed sump pump

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

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Float switch signalling two different liquid levels

Electricity: circuit makers and breakers – Float – Float and pressure
Patent

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Grid drain system

Hydraulic and earth engineering – Drainage or irrigation – Having regulation of flow through channel
Reexamination Certificate

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Monitor apparatus for sump pumps

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Profile ID: LFUS-PAI-P-195747

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