4. Acoustics
  5. Plural diaphragm sound sources

Edward G. Vollmer

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High fidelity small omnidirectional loudspeaker

Acoustics – Plural diaphragm sound sources
Reexamination Certificate

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Spherical loudspeaker for omnipresent sound reproduction

Electrical audio signal processing systems and devices – Having non-electrical feature – Loudspeakers driven in given phase relationship
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2512959

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