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| Number | Title | Issue Date |
| 7267739 | Tensioned pipe support The apparatus and method for eliminating ground water infiltration while stabilizing the ground and repairing underground pipe/conduit and connections is taught in this art. The steps are to first inject, under pressure, expandable structural foam in the space adjac... | 09/11/2007 |
| 7135087 | Apparatus and method for the repair and stabilization of underground pipes The apparatus and method for eliminating ground water infiltration while stabilizing the ground and repairing underground pipe/conduit and connections is taught in this art. The steps are to first inject, under pressure, expandable structural foam in the space adjac... | 11/14/2006 |
| 7052567 | Inflatable heating device for in-situ repair of conduit and method for repairing conduit The apparatus of the present invention is generally characterized by a heating/inflation module having pressurizable interior and an attached heat curable pre-preg. In particular, an elastomeric, seamless composite is provided that includes a heating element dispose... | 05/30/2006 |
