Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Apparatus for locating buried conductors using phase-shifted signals

Apparatus for locating buried conductors using phase-shifted signals

US Patent 5471143 · Granted Nov 28, 1995

Estimated economic value: $8,000,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Marker device for underground infrastructure2025
Magneto-mechanical marker with enhanced frequency stability and signal strength2021
Elliptically-shaped resonator markers with enhanced frequency stability and gain2020
Tape format magnetoelastic resonator markers2020
Magneto-mechanical marker with enhanced frequency stability and signal strength2019
Magnetomechanical markers for marking stationary assets2017
Magnetomechanical markers for marking stationary assets2015
GPS interface for locating device2008
Collision arbitration method and apparatus for reading multiple radio frequency 2002
Extended range passive marker2001
Conductor locator adapter for electronic markers1995
Induction coil driver1990