Method of locating underground utility lines and an underground utility line
US6778128B2 · kind B2 · utility
100Cited by
33References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2003 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Feb 4, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of locating an underground utility line. A first step involves securing transponders along a length of an underground utility line at regular spaced intervals. A second step involves interrogating the transponders to receive transponder signals. A third step involves ascertaining the position of the transponder signals and extrapolating positioning of the underground utility line from the transponder signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.