4. Telephonic communications
  5. Substation or terminal circuitry
  6. Conversion of signal form

Masato Kubo

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Portable telephone with a speaker having an improved acoustic ch

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Mounting or support feature of housed loudspeaker
Patent

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Telephone set with background noise suppression function

Telephonic communications – Substation or terminal circuitry – Conversion of signal form
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Profile ID: LFUS-PAI-P-144952

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