4. Electricity: circuit makers and breakers
  5. Fluid pressure
  6. Piston

Joseph C. Halpine

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Ball valve having improved sealing capability

Valves and valve actuation – Rotary valves – Ball valve
Patent

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Double wall meter prover

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

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Piston detector switch

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

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Rotary plug valve

Fluid handling – Systems – Multi-way valve unit
Patent

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Profile ID: LFUS-PAI-P-1084359

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