Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE39378 | Optical channel regulator and method | J. Michael Dugan | 2006-11-07 |
| 7130537 | Safety shutdown system for a WDM fiber optic communications network | — | 2006-10-31 |
| 6411407 | Method for providing a bidirectional optical supervisory channel | — | 2002-06-25 |
| 6157475 | Optical channel regulator and method | J. Michael Dugan | 2000-12-05 |
| 5923450 | Optical channel regulator and method | J. Michael Dugan | 1999-07-13 |
| 5374973 | Optical amplifier | John M. Dugan | 1994-12-20 |
| 4614906 | Series circuit regulating apparatus | — | 1986-09-30 |