4. Pumps
  5. Condition responsive control of pump drive motor
  6. In response to pump speed

Holger Sievert

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Method and device for detecting the speed of a pump

Pumps – Condition responsive control of pump drive motor – In response to pump speed
Reexamination Certificate

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Method and device for measuring the rotational speed of a...

Electricity: measuring and testing – Electrical speed measuring – Including motor current or voltage sensor
Reexamination Certificate

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