Car seat base

FIG. 1 is a perspective view of a first embodiment of a car seat base showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right-side elevation view thereof;

FIG. 5 is a left-side elevation view thereof;

FIG. 6 is a front elevation view thereof;

FIG. 7 is a back elevation view thereof;

FIG. 8 is a perspective view of a second embodiment of a car seat base showing my new design;

FIG. 9 is a top plan view thereof;

FIG. 10 is a bottom plan view thereof;

FIG. 11 is a right-side elevation view thereof;

FIG. 12 is a left-side elevation view thereof;

FIG. 13 is a front elevation view thereof; and,

FIG. 14 is a back elevation view thereof.

The broken line in all views of the drawing is for illustrative purposes only and forms no part of the claimed design.