4. Measuring and testing
  5. Liquid level or depth gauge
  6. Immersible electrode type

Andrew R. Dobson

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Down-hole liquid detecting apparatus

Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Patent

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Introduction of particulate material into a borehole

Wells – Processes – Graveling or filter forming
Patent

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Water level probe

Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Patent

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Profile ID: LFUS-PAI-P-250522

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