Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Telephone line interface circuit without hookswitch relay

Telephone line interface circuit without hookswitch relay

US Patent 6714645 · Granted Mar 30, 2004

Estimated economic value: $22,047,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Distributed volumetric cargo sensor system2022
Apparatus and method for determining mounting state of a trailer tracking device2021
Apparatus and method for determining mounting state of a trailer tracking device2020
Verification of installation of vehicle starter disable and enable circuit2020
Modem with hold and quick connect functionality2009
Use of modem on hold for network management and telephone access2009
Using modems to place modem connections on hold and to maintain upper layer netw2008
Electronic inductor with transmit signal telephone line driver2006
Software decoding of composite video without a phase-locked loop2006
Modem identification and diagnostics2006
Processing diagnostic and identification data in an analog modem system2005
Modem on hold2005