4. Chemistry: fertilizers
  5. Processes and products
  6. Bacterial

Fred G. Williams, Jr.

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Filtration system for household sewage

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

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Filtration with a compostable filter medium

Chemistry: fertilizers – Processes and products – Bacterial
Patent

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Sewage delivery and filtration system

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent

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Profile ID: LFUS-PAI-P-1270986

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