4. Telephonic communications
  5. Special services
  6. Locating using diverse technology

Xiqun Zhu

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Redundant power supply systems and methods

Electrical transmission or interconnection systems – Plural supply circuits or sources – Plural converters
Reexamination Certificate

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Remote reconfiguration method for feature-function telephone...

Telephonic communications – Special services – Locating using diverse technology
Reexamination Certificate

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Telephone line-powered power supply for ancillary equipment...

Telephonic communications – Subscriber line or transmission line interface – Power supply
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2054115

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