LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Polystation line system – Automatic or unattended

Low noise multi-elevator communication system and method

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal

Low power control apparatus for a coin operated telephone

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

Low power dialer

Telephonic communications – Call signal generating

Low power emergency telephone mode

Telephonic communications – Subscriber line or transmission line interface – Power supply

Low power line selection circuit for a telephone

Telephonic communications – Supervisory or control line signaling – Signal receiver

Low power signal detection

Telephonic communications – Subscriber line or transmission line interface

Low profile circuit board mounted telephone jack

Telephonic communications – Terminal accessory or auxiliary equipment – Support or stand

Low profile telephone set

Telephonic communications – Terminal accessory or auxiliary equipment – Support or stand

Low profile telephone set

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

Low resistance origination scan circuit

Telephonic communications – Subscriber line or transmission line interface – Hybrid circuit

Low voltage balanced hybrid circuit with operational amplifiers

Telephonic communications – Subscriber line or transmission line interface

Low voltage broadband line driver

Telephonic communications – Subscriber line or transmission line interface – Network interface device

Low voltage circuits powered by the phone line

Telephonic communications – With check operated control – Coin signalling or control

Low voltage operated coin relay

Telephonic communications – Subscriber line or transmission line interface

Low voltage sensing and control of battery referenced...

Telephonic communications – Subscriber line or transmission line interface – Network interface device

Low-delay subband adaptive filter

Telephonic communications – Supervisory or control line signaling – Signal receiver

Low-frequency alternating current signal detector, in particular

Telephonic communications – Terminal – Housing or housing component

Low-noise transmitting receiving earset

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

Low-pass filtering device with integrated insulator and...