Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6369679 | Method and apparatus for providing permanent magnetic signatures in buried cables and pipes to facilitate long-range location, tracking and burial depth determination | Timothy I. Marzolf, Delbert R. Oehme, Ronald F. Stebbings | 2002-04-09 |
| 6366191 | Method and apparatus for providing permanent magnetic signatures in buried cables and pipes to facilitate long-range location, tracking and burial depth determination | Timothy I. Marzolf, Delbert R. Oehme, Ronald F. Stebbings | 2002-04-02 |