The ornamental design for a pocketkeyhook, as shown and described.
FIG. 1 is a front perspective view of the new design complete in a vertical
position, with the key ring and pull ring omitted;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front perspective view of device placed in a horizontal manner.
This view illustrates the curve formed by the two arms that holds the
device in position; and,