A composite mattress assembly has multiple layers, where one or more of the layers are foam layers and the rest are spring coil mattress layer(s). The composite mattress assembly may be made exclusively of foam layers as well. Any of the layers can be divided into two halves, which is divided longitudinally...http://www.google.es/patents/US20070022540?utm_source=gb-gplus-sharePatente US20070022540 - Composite mattress assembly and method for adjusting the same
Composite mattress assembly and method for adjusting the same
Número de solicitud: 11/504,752 Número de publicación: US 2007/0022540 A1 Fecha de presentación: 14 Ago 2006 Patente emitida: US7386903 ( Fecha de emisión 17 Jun 2008)
