4. Electrical audio signal processing systems and devices
  5. Electro-acoustic audio transducer
  6. Plural or compound reproducers

Intellectual Property Law Office of Thomas Chuang

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Accessory interface bus for telephone headset adapter

Multiplex communications – Channel assignment techniques – Details of circuit or interface for connecting user to the...
Reexamination Certificate

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Charger contact with protective actuator

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – For battery pack
Reexamination Certificate

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Charger contact with protective actuator

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – For battery pack
Reexamination Certificate

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Conformable ear tip with spout

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

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Headset charging cradle

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure
Reexamination Certificate

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