4. Classifying, separating, and assorting solids
  5. Plural, diverse separating operations
  6. Aqueous suspension and sifting

David L. Watts

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Heavy metal separator

Classifying – separating – and assorting solids – Plural – diverse separating operations – Aqueous suspension and sifting
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Motor controller for pumping units

Electricity: motive power systems – Induction motor systems – Primary circuit control
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