There is disclosed a germicidal treatment system having a status indicator. The germicidal treatment system comprises at least one mounting assembly attachable to an outside of a wall of an air handling apparatus. Each of the mounting assemblies includes a germicidal lamp and a ballast. The germicidal...http://www.google.com/patents/US20040213714?utm_source=gb-gplus-sharePatent US20040213714 - Germicidal treatment system with status indicator