4. Electrical audio signal processing systems and devices
  5. Electro-acoustic audio transducer
  6. Plural or compound reproducers

Joo-Bae Kim

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Bone vibrating speaker using the diaphragm and mobile phone...

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Body contact wave transfer
Reexamination Certificate

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Subminiature bone vibrating speaker using the diaphragm and...

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

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Profile ID: LFUS-PAI-P-2420047

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