The ornamental design for a surfacepattern for a panel, as shown and described.
The file of this patent contains at least one drawing/ photograph executed in color. Copies of this patent with color drawing(s)/photographs(s) will be provided by the Office upon request and payment of the necessary fee.
1.-2. Surface patterns
Fig. 1.0 is a plan view in color of a surface pattern for a panel showing my new design.