4. Gas and liquid contact apparatus
  5. With external supply or removal of heat
  6. Heat producer

David B. White

Inventor

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Deflectable chair back

Chairs and seats – Back movement resiliently opposed in operating position – Back secured to resilient upright bar or rod
Patent

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Electrical safety device

Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent

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Humidification system

Gas and liquid contact apparatus – Fluid distribution – Systems
Patent

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Method for estimating porosity and/or permeability

Boots – shoes – and leggings
Patent

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Method of detecting fluid influxes

Measuring and testing – Borehole or drilling – Downhole test
Patent

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Profile ID: LFUS-PAI-P-367017

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