Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Malfunction-detecting equipment for real-time supervision of central-office circuits in telecommunication system

Malfunction-detecting equipment for real-time supervision of central-office circuits in telecommunication system

US Patent 4208552 · Granted Jun 17, 1980

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Integrated helical multi-layer inductor structures2016
Handling and positioning of metallic plated balls for socket application in ball2009
Structure of stacked vias in multiple layer electrode device carriers2008
Optical switch for fast cell-switching network1995
Node for a fast packet-switching network in optical-electrical technology1990
Equipment for sending digitally pre-stored voice announcements to the subscriber1987
Interface linking synchronous sense and drive matrices of telephone system with 1980
Interface linking synchronous sense and drive matrices of telephone system with 1980
Signal detector for monitoring electric circuits of a telecommunication system1980