4. Liquid purification or separation
  5. Flow, fluid pressure or material level, responsive
  6. Filter cleaning

Thomas B. Lewis

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Filter insert system

Liquid purification or separation – Flow – fluid pressure or material level – responsive – Filter cleaning
Patent

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Video conferencing device and method

Television – Two-way video and voice communication – User positioning
Reexamination Certificate

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Profile ID: LFUS-PAI-P-324471

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