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

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

Telephone

Telephonic communications – Substation or terminal circuitry

Telephone accessory for generating conversation utterances...

Telephonic communications – Substation or terminal circuitry – Visual signalling

Telephone accessory housing

Telephonic communications – Substation or terminal circuitry

Telephone adapter and telephone system providing multiple...

Telephonic communications – Substation or terminal circuitry – Amplifying

Telephone amplifier with switchable gain control

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

Telephone apparatus

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Telephone apparatus

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

Telephone apparatus comprising monitoring means

Telephonic communications – Substation or terminal circuitry – Power control or detection circuit

Telephone apparatus for stabilizing call in no power...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Telephone apparatus with call transfer function and with improve

Telephonic communications – Substation or terminal circuitry – Visual signalling

Telephone apparatus, information processing apparatus and inform

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 – Sidetone control or hybrid circuit

Telephone circuit capable of inhibiting noise of customer premis

Telephonic communications – Substation or terminal circuitry – Sidetone control or hybrid circuit

Telephone circuits

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Telephone device

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