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

Darroll D. Bengtson

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Electromagnetic flowmeter

Measuring and testing – Volume or rate of flow – By measuring electrical or magnetic properties
Patent

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Flanged vortex flowmeter with unitary tapered expanders

Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Reexamination Certificate

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Flowmeter flow tube

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

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Profile ID: LFUS-PAI-P-1279570

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