LandOfFree - US Patents - Listing for Telephonic communications,Substation or terminal circuitry,Conversion of signal form

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

Speech amplifier associated with an LED

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

Speech control apparatus used in a folding telephone

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

Subscriber circuit

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

Subscriber line driver with equalizer

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

System and method for providing user feedback to couple an elect

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

System for the processing of audio data used for music on...

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

Telecommunication device

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

Telecommunications end station with electrically controlled term

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

Telecommunications off-hook and intrusion detection method...

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

Telephone

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

Telephone apparatus

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

Telephone applicable to PSTN and IP network and call...

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

Telephone applicable to PSTN and IP network and call...

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

Telephone charging signalling detector suitable for central offi

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

Telephone device for amplifying opposite party's voice after use

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

Telephone for connection to a public telephone network

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

Telephone handset interface with feedback control

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

Telephone having a speech band limiting function

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

Telephone having separate power circuit for supplying power to s