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

Gerald E. Roberts

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Apparatus and process for measuring the resonant frequency and c

Metal working – Piezoelectric device making
Patent

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Apparatus for measuring the resonant frequency and coefficient o

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

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Architecture and frequency plan for a UHF portable radio

Telecommunications – Transmitter and receiver at same station
Reexamination Certificate

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Attachment for surface-mounting a resonator crystal on a circuit

Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent

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Chair mechanism

Chairs and seats – Legrest or footrest interconnected to move relative to... – With means to move bottom relative to and concurrently with...
Patent

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Profile ID: LFUS-PAI-P-272407

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