Bicycle frame

[0001]FIG. 1 is a perspective view of a bicycle frame showing our new design;

[0002]FIG. 2 is a front elevation view thereof;

[0003]FIG. 3 is a rear elevation view thereof;

[0004]FIG. 4 is a left side elevation view thereof;

[0005]FIG. 5 is a right side elevation view thereof; and,

[0006]FIG. 6 is a top plan view thereof.

[0007]The broken lines in the drawings illustrate portions of the bicycle frame that form no part of the claimed design.