Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Reexamination Certificate
2006-12-19
2006-12-19
Kwok, Helen (Department: 2856)
Measuring and testing
Liquid level or depth gauge
Immersible electrode type
C073S29000R, C073S864010
Reexamination Certificate
active
07150190
ABSTRACT:
A liquid level sensor confirms actual physical contact between a probe and a liquid by verifying that any change in capacitance of the sensor is constant over a given time period and thereby is not caused by spurious electrical disturbances or other measuring irregularities.
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Joseph Joson Kunnumpuram
Krufka Frank S.
Lewis Arnold Lloyd
Dade Behring Inc.
Frank Rodney
Jordan Leland K.
Kwok Helen
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