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

Akihiro Akiyama

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Speaker apparatus

Electricity: motive power systems – Braking – By auxiliary electric generator or by magnetic attraction or...
Patent

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Speaker box

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Speaker or housing therefor
Design Patent

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Stereo loudspeaker system with tweeters mounted on rotatable enl

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

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Profile ID: LFUS-PAI-P-477450

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