4. Electrical transmission or interconnection systems
  5. Switching systems
  6. Condition responsive

Steven Brooke Witmer

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Call related information reception using sigma/delta modulation

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

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Communication card with telephone line interlock and cellular in

Electrical transmission or interconnection systems – Switching systems – Condition responsive
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Extended feedback circuit employing capacitive coupling and...

Telephonic communications – Line equalization or impedance matching
Reexamination Certificate

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Extended feedback circuit employing capacitive coupling and...

Telephonic communications – Line equalization or impedance matching
Reexamination Certificate

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Line powered DAA with single ended feedback

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-652435

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