4. Communications, electrical: acoustic wave systems and devices
  5. Signal transducers
  6. Receivers

Andrea Chiesi

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Devices and transducers with cavity resonator to control 3-D...

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Reexamination Certificate

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Resonator device and circuits for 3-D detection/receiving...

Communications – electrical: acoustic wave systems and devices – Signal transducers – Receivers
Reexamination Certificate

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Sound absorbent panel

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment
Design Patent

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Profile ID: LFUS-PAI-P-3089760

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