4. Measuring and testing
  5. With fluid pressure
  6. Leakage

Peter P. Elderton

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Densitometer

Measuring and testing – Specific gravity or density of liquid or solid – Hydrostatic pressure type
Patent

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Leak detection system for storage tanks

Measuring and testing – With fluid pressure – Leakage
Patent

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Net oil computer or the like

Registers – Platform operated – Platform actuated traffic counters
Patent

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Potentiometer position switch circuit

Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids
Patent

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Tank gauging system

Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Patent

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Profile ID: LFUS-PAI-P-416871

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