4. Measuring and testing
  5. Fluid pressure gauge
  6. Diaphragm

Ronald R. Krueger

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Combination pressure switch and gage

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

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Differential pressure switch having an isolated hall effect sens

Measuring and testing – Fluid pressure gauge – Diaphragm
Patent

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Pressure gage and switch

Measuring and testing – Fluid pressure gauge – Bourdon
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1802169

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