Filter base

Description

FIG. 1 is a top, front left perspective view of a first embodiment of a filter base shown according to the present design;

FIG. 2 is a bottom, back left perspective view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is rear end view thereof;

FIG. 8 is a front end view thereof;

FIG. 9 is a top, front left perspective view of a first embodiment of a filter base shown according to the present design;

FIG. 10 is a bottom, back left perspective view thereof;

FIG. 11 is a left side elevational view thereof;

FIG. 12 is a right side elevational thereof;

FIG. 13 is a top plan view thereof;

FIG. 14 is a bottom plan view thereof;

FIG. 15 is a rear end view thereof; and,

FIG. 16 is a front end view thereof.

The broken line representations in the figures show unclaimed environment or boundaries.

The broken line representations thus form no part of the claimed design as filed.

Claims

The ornamental design for a filter base, as shown and described.