4. Liquid purification or separation
  5. Processes
  6. Using magnetic force

Frank A. Spear

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Apparatus and method for processing magnetic particles

Liquid purification or separation – Processes – Using magnetic force
Reexamination Certificate

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Apparatus for processing magnetic particles

Liquid purification or separation – Magnetic
Reexamination Certificate

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Assist device for a door handle and latch assembly

Closure fasteners – Operators with knobs or handles
Reexamination Certificate

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Method for mixing and separation employing magnetic particles

Liquid purification or separation – Processes – Using magnetic force
Reexamination Certificate

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