4. Telephonic communications
  5. Subscriber line or transmission line interface
  6. Hybrid circuit

Gen'ichi Fujiwara

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PLL circuit and design method thereof

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate

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Two-wire to four-wire switching exchanger

Telephonic communications – Subscriber line or transmission line interface – Hybrid circuit
Patent

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Voice frequency communication apparatus

Pulse or digital communications – Repeaters – Testing
Patent

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Profile ID: LFUS-PAI-P-1425779

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