Patent attributes
A holder includes first and second support surfaces, first and second bases, pivotal first and second legs, and a folding linking assembly. Front ends of the first and second support surfaces are pivotably secured to front ends of the first and second base respectively; each of the first and second support surfaces include a transverse groove in a central portion, a recess below a bottom, a lengthwise trough in a rear portion of a top, and a limit member moveably disposed in the first trough; each of the first and second bases include parallel first slits on a rear portion of a top; each of the first and second legs have an upper end pivotably secured to the bottom of the first or second support surface; and the folding linking assembly is pivotably disposed between the front ends of the first and second support surfaces.
