4. Electricity: motive power systems
  5. Positional servo systems
  6. Frequency- or phase-modulated systems

William S. Hammel

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Digital current regulator

Electricity: motive power systems – Positional servo systems – Frequency- or phase-modulated systems
Patent

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Harmonic disturbance regulator

Electricity: motive power systems – Positional servo systems – Unwanted harmonic or voltage component elimination...
Reexamination Certificate

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Linear resolver utilizing plural nulled coil sets

Electricity: measuring and testing – Magnetic – Displacement
Patent

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Profile ID: LFUS-PAI-P-1000618

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