Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7633971 | Method and system for transport of packet-based datastreams over frame-based transport systems employing physically diverse transmission channels | Robert Keith Butler, Robert W. Cantwell, Rajendra R. Damle, Debasish Nag | 2009-12-15 |
| 6587236 | Fiber optic errorless switching system | Robert Keith Butler, Mark L. Jones | 2003-07-01 |
| 5844702 | Bidirectional optical fiber transmission system with reflection signal monitor | Francis R. Yarkosky | 1998-12-01 |