4. Measuring, testing, or signalling instruments
  5. Measuring, regulating or indicating instrument, or casing
  6. Chemical

Charles E. Carroll

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Analysis system

Optics: measuring and testing – Oil testing
Patent

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Analysis system

Optics: measuring and testing – Oil testing
Patent

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Crush-resistant coaxial transmission line

Electricity: conductors and insulators – Conduits – cables or conductors – Conductive armor or sheath
Patent

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Emergency personnel lowering apparatus

Fire escape – ladder – or scaffold – Torso harness – Strand-engaging – with descent retarder
Patent

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Oil analysis apparatus

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Chemical
Patent

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Profile ID: LFUS-PAI-P-294606

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