A cellular cushion includes a base and a plurality of hollow cells coupled to the base. The base includes at least a first layer and a second layer. The first layer includes a substantially planar lower surface and an opposite upper surface. The second layer includes a substantially planar lower surface...http://www.google.fr/patents/US20080196166?utm_source=gb-gplus-shareBrevet US20080196166 - CELLULAR CUSHION
Numéro de demande: 12/060,677 Numéro de publication: US 2008/0196166 A1 Date de dépôt: 1 avr. 2008 Brevet délivré: US7681265 ( Date de délivrance 23 mars 2010)
