4. Measuring and testing
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Hydrogen sampler for molten metal and method

Measuring and testing – Gas content of a liquid or a solid – Of metal
Patent

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Hydrogen sensor

Measuring and testing – Gas analysis – Detector detail
Reexamination Certificate

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Hydrogen sensor

Measuring and testing – Gas analysis – Detector detail
Reexamination Certificate

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Hydrogen sensor

Measuring and testing – Gas analysis – Detector detail
Reexamination Certificate

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Hydrogen sensor

Measuring and testing – Gas content of a liquid or a solid – By vibration
Patent

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Hydrogen sensor

Measuring and testing – Gas analysis – Detector detail
Reexamination Certificate

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Hydrogen sensor using a solid hydrogen ion conducting electrolyt

Measuring and testing – Gas analysis – Gas chromatography
Patent

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Hydrogen sensor using a solid hydrogen ion conducting...

Measuring and testing – Gas analysis – Gas chromatography
Reissue Patent

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Hydrogen sensor utilizing rare earth metal thin film detection e

Measuring and testing – Gas analysis – With compensation detail
Patent

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Hydrogen sensor with air access

Measuring and testing – Gas content of a liquid or a solid – Particular separator
Reexamination Certificate

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Hydrogen sensor, apparatus for measuring hydrogen...

Measuring and testing – Gas analysis – By thermal property
Reexamination Certificate

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Hydrogen sulfide generator for sensor calibration

Measuring and testing – Instrument proving or calibrating – Gas or liquid analyzer
Reexamination Certificate

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Hydrogen sulfide measuring systems and the like

Measuring and testing – Gas analysis – Gas chromatography
Patent

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Hydrogen supply apparatus and hydrogen supply method for...

Measuring and testing – Steam or water operated engine; related engine system or...
Reexamination Certificate

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Hydrogen transfer system for gas chromatograph

Measuring and testing – Gas analysis – Gas chromatography
Patent

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Hydrogen, deuterium thermal conductivity detector

Measuring and testing – Gas analysis – Gas chromatography
Patent

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Hydrometer

Measuring and testing – Specific gravity or density of liquid or solid – Float operated indicator
Reexamination Certificate

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Hydrometer

Measuring and testing – Specific gravity or density of liquid or solid – Float operated indicator
Patent

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Hydrometer for determination of immunoglobulin content of mare c

Measuring and testing – Specific gravity or density of liquid or solid – Freely vertical reciprocable float with carried indicium
Patent

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Hydrometer for determining coolant fluid antifreeze concentratio

Measuring and testing – Specific gravity or density of liquid or solid – Multiple floats of graduated density
Patent

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