Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4427942 | Concealed electrical conductor detecting system | — | 1984-01-24 |
| 4220913 | Apparatus for and methods of electromagnetic surveying of elongated underground conductors | Mark Howell | 1980-09-02 |