4. Measuring and testing
  5. Instrument proving or calibrating
  6. Volume of flow, speed of flow, volume rate of flow, or mass...

Helmut W. Hopfe

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Flow prover with seal monitor

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

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Fluid meter register cover

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Element or attachment
Design Patent

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Temperature compensated rotary meter

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

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Vent system

Fluid handling – Diverse fluid containing pressure systems – Fluid separating traps or vents
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1306459

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