Steffen D. Koehler

Follow

Person

Annapolis, MD, US

People

Patents Grantslast 30 patents

Information Patent Grant
WDM ring transmission system having two hubs
- Patent number 6,426,815
- Issue date Jul 30, 2002
- CIENA Corporation
- Steffen Koehler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Intra-node diagnostic signal
- Patent number 6,141,125
- Issue date Oct 31, 2000
- CIENA Corporation
- Loudon T. Blair
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
WDM ring transmission system having reduced adjacent channel cross-...
- Patent number 6,021,233
- Issue date Feb 1, 2000
- CIENA Corporation
- Steffen D. Koehler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE