4. Electrical audio signal processing systems and devices
  5. Electro-acoustic audio transducer
  6. Mounting or support feature of housed loudspeaker

Richard S. Roark

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Field rebuildable low frequency loudspeaker driver having a...

Acoustics – Diaphragm – Mounting or suspension means
Reexamination Certificate

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Low frequency loudspeaker driver having a polygonal...

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate

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Mountable sound pressure level meter

Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate

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Recessed audio speaker system

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

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Profile ID: LFUS-PAI-P-1643570

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