Floor covering, including hard floor panels which, at least at the edges of two opposite sides, are provided with coupling parts, cooperating which each other, substantially in the form of a tongue and a groove, wherein the coupling parts are provided with integrated mechanical locking elements which...http://www.google.fr/patents/US20060248831?utm_source=gb-gplus-shareBrevet US20060248831 - Floor panels with edge connectors
Numéro de demande: 11/481,922 Numéro de publication: US 2006/0248831 A1 Date de dépôt: 7 juil. 2006 Brevet délivré: US7673431 ( Date de délivrance 9 mars 2010)
