4. Measuring and testing
  5. Liquid level or depth gauge

Eric D. Haugen

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Apparatus and method to non-intrusively measure the level of...

Measuring and testing – Liquid level or depth gauge – Thermal type
Reexamination Certificate

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Built-in test procedure for non-intrusive ultrasonic level...

Measuring and testing – Liquid level or depth gauge
Reexamination Certificate

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Fluid level sensor with dry couplant

Measuring and testing – Liquid level or depth gauge
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2498536

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