4. Electricity: measuring and testing
  5. Impedance, admittance or other quantities representative of...
  6. Piezoelectric crystal testing

Ralph Pringle, Jr.

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Crystal resonant frequency sensor

Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Piezoelectric crystal testing
Reexamination Certificate

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Crystal resonant frequency sensor

Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate

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Scintillation-immune adaptive optics reconstructor

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2014262

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