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Fail-safe electrical-ground indicator

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent

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Failed diode indicator

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent

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Failure monitor for crystal filters

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent

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Faraday current sensor with fiber optic compensated by temperatu

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Patent

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Faraday-effect current sensor with improved vibration response

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

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Faraday-effect sensing coil with stable birefringence

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Patent

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Fast edge generator with wide dynamic range

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Analysis of complex waves
Reexamination Certificate

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Fast frequency measuring system

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent

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Fast recovery power supply

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent

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Fault detection apparatus for rotor winding of rotary machine

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent

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Fault detection method and apparatus for multiconductor cables

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent

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Fault detection system as for locating faulty connections in a c

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent

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Fault detector

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With coupling means
Patent

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Fault detector for aircraft variable speed, constant frequency p

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent

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Fault detector for communications equipment using exclusive or c

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent

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Fault detector with improved response time for electrical transm

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent

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Fault diagnosis system for rotor winding of rotary electric mach

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent

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Fault identification in electric power transmission systems

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent

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Fault indicator

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With electromagnetic field
Patent

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Fault indicator and means for resetting the same

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With coupling means
Patent

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