LandOfFree - US Patents - Listing for Telephonic communications,Substation or terminal circuitry

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Impedance blocking filter circuit for digital subscriber...

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Impedance compensation in interfacing a modem to a telephone...

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Information processing terminal, operation content notifying...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Input-output balanced filter

Telephonic communications – Substation or terminal circuitry – Conversion of signal form

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Input-output balanced filter

Telephonic communications – Substation or terminal circuitry – Conversion of signal form

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Input/output circuit for a communication device

Telephonic communications – Substation or terminal circuitry – Conversion of signal form

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Integrated circuit configurations and methods for providing...

Telephonic communications – Substation or terminal circuitry

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Integrated circuit for the transmission of telephone signals

Telephonic communications – Substation or terminal circuitry – Amplifying

Patent

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Integrated loop current detector apparatus for a PSTN modem

Telephonic communications – Substation or terminal circuitry – Hold circuit

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Interface for a telephone set

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

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