FIG. 1 is a perspective view of the elliptical bicycle frame.

FIG. 2 is another perspective view of the elliptical bicycle frame.

FIG. 3 is a right side view of the elliptical bicycle frame.

FIG. 4 is a left side view of the elliptical bicycle frame.

FIG. 5 is a rear elevational view of the elliptical bicycle frame.

FIG. 6 is a front elevational view of the elliptical bicycle frame.

FIG. 7 is a top plan view of the elliptical bicycle frame; and,

FIG. 8 is a bottom plan view of the elliptical bicycle frame.

The broken lines shown in FIGS. 1 and 2 are included for the purpose of illustrating environmental elements only and form no part of the claimed design.