US D306640 S
FIG. 1 is a perspective view of a filter cartridge for swimming pools or the like showing my new design, it being understood that the opposite side is a mirror image of the side shown;
FIG. 2 is a top plan view thereof;
FIG. 3 is a side elevation view of the top cover plate thereof, shown separately for convenience of illustration;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a cross-sectional view of the top cover plate thereof, taken through line 5--5 in FIG. 2, and
FIG. 6 is a cross-sectional view of the bottom cover plate thereof, taken through line 6--6 in FIG. 4.