4. Electrical audio signal processing systems and devices
  5. Electro-acoustic audio transducer
  6. Having electrostatic element

Yu-Teng Hsiao

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Auxiliary eyeglass frame with a position-adjustable device

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With auxiliary lenses movable in and out of the optical path
Reexamination Certificate

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Coupling system for securing an eyeglass frame to a cap visor

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With support or holder
Reexamination Certificate

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Eyeglass frames with hidden magnetic attachment structure

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With auxiliary lenses movable in and out of the optical path
Reexamination Certificate

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Loudspeaker

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Magnetic coupling system for securing a temple to an...

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Connectors
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1106165

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