4. Telephonic communications
  5. Subscriber line or transmission line interface

John P. Guido

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Line interface with gain feedback coupled matching impedance

Telephonic communications – Subscriber line or transmission line interface
Reexamination Certificate

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Line interface with second order high pass transfer function

Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
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Profile ID: LFUS-PAI-P-2896432

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