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| Number | Title | Issue Date |
| 7107732 | Purlin clip for an insulated ceiling of a metal building An insulated ceiling is provided for a metal building, an includes a plurality of spaced apart metal purlins with upper and lower flanges, a metal roof attached to the upper flanges of the purlins, insulated panels attached to the bottom flanges of the purlins so as... | 09/19/2006 |