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

Tsutomu Yoshioka

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Horn loudspeaker

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

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Loudspeaker horn

Acoustics – Sound-modifying means – Intensifying horn
Patent

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Panel for automobile

Static structures (e.g. – buildings) – With synthetic resinous component – Foam
Patent

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Radio receiver with playback means

Dynamic information storage or retrieval – Combined independent audio systems – Radio
Patent

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Reinforcing member

Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent

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Profile ID: LFUS-PAI-P-890404

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