4. Electrical audio signal processing systems and devices
  5. Electro-acoustic audio transducer
  6. Electrostrictive, magnetostrictive, or piezoelectric

Helio T. Bittencourt

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Electroacoustic piezoelectric transducer having a broad operatin

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

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Electroacoustic transducer

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent

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Mid-range tweeter

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Patent

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Tweeter

Recording – communication – or information retrieval equipment – Computer – data processor equipment
Patent

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Profile ID: LFUS-PAI-P-501858

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