4. Measuring and testing
  5. Gas analysis
  6. Gas chromatography

Nicolaas T. van der Walt

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Alarm system

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Gas detectors

Measuring and testing – Gas analysis – Gas chromatography
Patent

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Ionization type fire detector

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Method of and apparatus for detecting cross sectional area varia

Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent

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Method of and apparatus for magnetic saturation testing a wire r

Electricity: measuring and testing – Magnetic – Plural tests
Patent

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Profile ID: LFUS-PAI-P-610835

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