4. Measuring, testing, or signalling instruments
  5. Measuring, regulating or indicating instrument, or casing
  6. Volume, flow or rate

David P. Riegel

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Capacitance liquid level sender

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent

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Flow meter alarm device

Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate

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Liquid level sender

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent

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Respiratory analyzer

Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent

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Profile ID: LFUS-PAI-P-449282

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