4. Acoustics
  5. Plural diaphragm sound sources

Frank Sterns

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Interchangeable pivoting loudspeaker assembly with spring...

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

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Loudspeaker assembly

Acoustics – Diaphragm and enclosure – Recessed
Patent

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Speaker

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

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Speaker

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

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Speaker assembly

Acoustics – Plural diaphragm sound sources
Patent

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Profile ID: LFUS-PAI-P-743333

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