Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594332 | Alternating current detector | C. Brian Wong, Gennady Reshetnikov, Brian McLaughlin | 1997-01-14 |
| 5448222 | Coupled transmission line sensor cable and method | — | 1995-09-05 |
| 5446446 | Differential, multiple cell reflex cable intrusion detection system and method | — | 1995-08-29 |
| 5247270 | Dual leaky cables | Charles R. Hill, Brian Rich | 1993-09-21 |
| 4994789 | Phase shift divided leaky cable sensor | — | 1991-02-19 |
| 4987394 | Leaky cables | Kenneth L. Smith | 1991-01-22 |
| 4710753 | Security system transmission line | Brian Rich, John W. Patchell | 1987-12-01 |
| 4612536 | Dual velocity leaky cable intrusion detector sensor | — | 1986-09-16 |
| 4605914 | Shunt transmission line for use in leaky coaxial cable system | — | 1986-08-12 |
| 4562428 | Intrusion detector | Dale R. Younge | 1985-12-31 |
| 4249207 | Perimeter surveillance system | John W. Patchell | 1981-02-03 |