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| Number | Title | Issue Date |
| 6550257 | Angled UV fixture in a-coil An angled germicidal lamp is used to illuminate a coil and drain pan for optimum energy utilization. In one embodiment, a variable angled mount is used for positioning a germicidal lamp at a desired angle at the time of installation. In a second embodimen... | 04/22/2003 |
| 6539727 | Angled UV fixture An angled germicidal lamp is used to illuminate a coil and drain pan for optimum energy utilization. In one embodiment, a variable angled mount is used for positioning a germicidal lamp at a desired angle at the time of installation. In a second embodimen... | 04/01/2003 |
| 5364458 | Adjustable air filtering device An adjustable filter uses an eight member frame construction to provide a wide range of filter sizes. A panel for encasing one or more layers of filtering materials within the frame is formed from a grid having a border which unevenly encompasses the cros... | 11/15/1994 |
| 5266090 | Multi-sided air filter with wraparound filter media A filtering unit having multiple filtering sides uses one or more filtering elements wrapped around an inner housing containing a blowing device. Outer housing panels are disposed about the filtering elements. The filtering elements and outer housing pane... | 11/30/1993 |
