4. Electricity: measuring and testing
  5. Conductor identification or location
  6. Inaccessible

Richard David Pearson

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Electronic marker locator system and method

Electricity: measuring and testing – Of geophysical surface or subsurface in situ – For small object detection or location
Reexamination Certificate

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Methods and systems for generating phase-derivative sound

Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate

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Signal generator

Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate

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Signal generator

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se
Reexamination Certificate

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System and method for detecting a concealed current carrying...

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With coupling means
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Profile ID: LFUS-PAI-P-2270688

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