(57) ABSTRACT A user interface includes a display for displaying of a plurality of sensor
data sets representative of signals asso ciated with a plurality of sensors configured for …

2005/0096847 A1 5/2005 Huang EP 684489 A1 11F1995 2005/02301.49 A1 10, 2005
Boucher EP 558379 B1 5, 1996 2005/0279532 A1 12/2005 Ballantyne EP 559286 B1 7 …

6,310,621 B1 10/2001 Gagne et al. 4,623,971 A* 1 1/1986 Ailman et al................. 7OO/252
6,317,646 B1 1 1/2001 de Caussin et al. 4,626,756 A 12/1986 Inaba et al. 6,330,483 B1 …

US20100030528A1 - Method, Apparatus, and System for Determining Accurate Location
Data Related to Underground Installations - Google Patents US20100030528A1 - Method …

A monitoring system is used to monitor the location and orientation of a downhole tool
assembly by detecting an output signal. The downhole tool assembly has a beacon …

The present invention is directed to a horizontal direc tional drilling system. The horizontal
directional drilling system comprises a horizontal directional drilling machine, a drill string, a …

A movable platform has a front end, a back end, a longitudinal axis, and at least one axle
oriented generally transverse to the longitudinal axis and located between the front and …

(57) ABSTRACT A system for determining the location of and communicating with a
downhole tool assembly. A tracker assembly com prises a vertical transmitting antenna, a …

A system and method of mapping underground utilities and other subsurface objects
involves one or more of acquiring utility location data using a number of different detectors …

(57) ABSTRACT A method of Surveying a section of a railway to determine amounts of soil
to be excavated or added at selected position coordinates of track locations includes moving …