Patent ID: 8484924

Claim:
A panel comprising a core of a wood material or a wood material-plastic mixture, the panel further comprising: a top side and a bottom side; a first lateral edge comprising a lower locking element, which comprises a first arm that is arranged on the bottom side and that extends from the first lateral edge, and a first hook element with an undercut that is arranged on an outer end of the first arm; and a second lateral edge that is opposite to the first lateral edge, comprising an upper locking element with a second arm that is arranged on the top side and that extends from the second lateral edge, and a second hook element, which has at least one locking nose, arranged on an outer end of the second arm, wherein, in the first arm of the lower locking element, at least one integral slot is provided with a width that is smaller than that of the second hook element, and the length of the at least one integral slot runs parallel to the first lateral edge and the at least one integral slot is a through hole.