| 20100018799 | ACOUSTIC ENHANCEMENT DEVICE FOR UNDERLAYMENT OF A COVERING - An acoustic enhancement device adapted for being placed on a support and under a covering, and containing a first flexible layer adapted for being placed facing the support, a second rigid layer joined to the first flexible layer and adapted for being placed opposite the support, and a damping element, wherein the damping element is integrated in the second rigid layer or forms a third layer placed on the second rigid layer and opposite the first flexible layer. | 01-28-2010 |
