The ornamenal design for a propanecylinderstoragecabinet, as shown and described.
FIG. 1 is a front view showing my new design;
FIG. 2 is a bottom view thereof;
FIG. 3 is a perspective view thereof with one of the doors shown in an
opened position. The side of the storage cabinet that is not shown is
identical to the side of the cabinet that is shown. The rear of the
cabinet is plain and unornamented; and,
FIG. 4 is a perspective view of another embodiment thereof.