Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5311130 | Electromagnetic field radiation detector having audible and visual indicators for detecting frequencies within the range of five hertz to four hundred kilohertz | Richard Bill | 1994-05-10 |
| 5309097 | Video display terminal magnetic field detector | Richard Bill | 1994-05-03 |