4. Electrical audio signal processing systems and devices
  5. Electro-acoustic audio transducer
  6. Housed microphone

Roger Hsu

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Container for ornamental accessories

Design Patent

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Cup

Compound tools – Cutter combined with other tool or tools
Design Patent

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Cup

Compound tools – Cutter combined with other tool or tools
Design Patent

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Cup

Compound tools – Cutter combined with other tool or tools
Design Patent

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Layered lenses and method of layering lenses

Coating processes – Optical element produced – Transparent base
Reexamination Certificate

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Profile ID: LFUS-PAI-P-333824

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