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

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

Electret microphone transmitter for use in telephone circuits

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

Electrical telephone speech network

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

Electronic headset telephone

Telephonic communications – Substation or terminal circuitry – Amplifying

Electronic telephone set

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

Electronic telephone set with low power hook switch

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

Electronic telephone terminal having noise suppression function

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

Electronic voice circuit configuration

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

End-user control of audio delivery endpoint in a multimedia...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Enhanced acoustic calibration procedure for a voice switched spe

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Enhanced low pass filter

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

Enhancement of sound quality for computer telephony systems

Telephonic communications – Substation or terminal circuitry – Noise suppression

Event driven noise cancellation

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Externally dialed hand-free operator for cellular phones

Telephonic communications – Substation or terminal circuitry

Febrile convulsion alarm

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Full duplex communication circuits with bilateral T hybrid...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Full duplex speaker-phone providing increased loop stability

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Full duplex speakerphone

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Full duplex speakerphone

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Full-duplex digital speakerphone