LandOfFree - US Patents - Listing for Telephonic communications,Supervisory or control line signaling

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System and method for supressing pulse dialing feedback occurrin

Telephonic communications – Supervisory or control line signaling – Signal reception at substation

Patent

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System and method of power limiting call processing in...

Telephonic communications – Supervisory or control line signaling – Signal reception at substation

Reexamination Certificate

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System for classifying lists of telephone numbers

Telephonic communications – Supervisory or control line signaling – Substation originated

Reexamination Certificate

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System using a portable call information device

Telephonic communications – Supervisory or control line signaling – Substation originated

Patent

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System, method and computer program for automated speed dialing

Telephonic communications – Supervisory or control line signaling – Substation originated

Patent

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Systems and methods for an electronic hook switch for...

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Reexamination Certificate

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Systems and methods for an electronic hook switch for...

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Reexamination Certificate

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Systems and methods for caller-controlled tune notification...

Telephonic communications – Supervisory or control line signaling – Signal reception at substation

Reexamination Certificate

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Systems and methods for caller-controlled tune notification...

Telephonic communications – Supervisory or control line signaling – Signal reception at substation

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Systems and methods for caller-controlled tune notification...

Telephonic communications – Supervisory or control line signaling – Signal reception at substation

Reexamination Certificate

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Systems and methods for storing information associated with...

Telephonic communications – Supervisory or control line signaling – Substation originated

Reexamination Certificate

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