4. Measuring and testing
  5. Fluid pressure gauge
  6. Null balance type

Joseph A. Perry

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Magnetic differential pressure switch

Electricity: circuit makers and breakers – Fluid pressure – Diaphragm
Patent

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Method and apparatus for preserving data in a...

Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate

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Pressure transducer

Measuring and testing – Fluid pressure gauge – Null balance type
Patent

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Windspeed indicator

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-481707

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