4. Measuring and testing
  5. Liquid level or depth gauge

Mark E. Warnaka

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Loudspeaker assembly

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate

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Phase track system for monitoring fluid material within a contai

Measuring and testing – Liquid level or depth gauge
Patent

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Piezoelectric transducers

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electrostrictive – magnetostrictive – or piezoelectric
Patent

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Piezoelectric transducers

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electrostrictive – magnetostrictive – or piezoelectric
Reexamination Certificate

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Vehicular loudspeaker system

Electrical audio signal processing systems and devices – Vehicle
Reexamination Certificate

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Profile ID: LFUS-PAI-P-35106

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