4. Geometrical instruments
  5. Area integrators
  6. Electrical

Thomas W. Childers

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Apparatus and method for externally testing conduit connections

Measuring and testing – With fluid pressure – Leakage
Patent

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Apparatus and method for externally testing conduit connections

Measuring and testing – With fluid pressure – Leakage
Patent

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Balanced stem fail-safe valve system

Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Patent

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Balanced stem fail-safe valve system

Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Patent

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Depth measurements

Geometrical instruments – Area integrators – Electrical
Patent

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Profile ID: LFUS-PAI-P-598128

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