Filter Indicator

FIG. 1 is a perspective view of a filter indicator showing the new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a back view thereof.

The broken line showing of a filter indicator is included for the purpose of illustrating portions of the article and forms no part of the claimed design.