Ramon C. W. Chea, Jr.

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Analog subscriber/trunk module with shared ringing source and ri

Multiplex communications – Wide area network – Packet switching
Patent

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Apparatus for regulating current supplied to a telephone line si

Patent

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Battery injection and loop supervision for DSL environment

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Using portable test set
Reexamination Certificate

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Circuit topology for protecting vulnerable micro...

Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means
Reexamination Certificate

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Dual voltage source feed circuit configuration for a telephone l

Patent

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Profile ID: LFUS-PAI-P-138866

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