Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Methods employing permanent magnets for marking, locating, tracing and identifying hidden objects such as buried fiber optic cables

Methods employing permanent magnets for marking, locating, tracing and identifying hidden objects such as buried fiber optic cables

US Patent 5122750 · Granted Jun 16, 1992

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Gyro stabilized modular laser measurement device2024
Customizable multifunctional dispenser module2021
Printed circuit fluxgate sensor for magnetic gradient detection device2004
Radially magnetized plastic pipe2001
Magnetic cores for saturable core measuring devices and methods of manufacturing1993
Methods, apparatus and devices relating to magnetic markers for elongated hidden1993
Methods, apparatus and devices relating to magnetic markers for elongated hidden1993
Method for providing magnetic markers on elongated hidden objects1992
Method for providing magnetic markers on elongated hidden objects1992
Method of manufacturing magnetic detection apparatus1992
Magnetic detection apparatus with sensors mounted on channel or angle cantilever1992
Methods, apparatus and devices relating to magnetic markers for elongated hidden1992