FIG. 1 is a perspective view of a foldable bicycle frame in accordance with my design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left view thereof;
FIG. 5 is a right view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a perspective view showing the foldable bicycle frame being assembled on a foldable bicycle;
FIG. 9 is a perspective view of a foldable bicycle frame showing a second embodiment of my design;
FIG. 10 is a front view of FIG. 9;
FIG. 11 is a rear view of FIG. 9;
FIG. 12 is a left view of FIG. 9;
FIG. 13 is a right view of FIG. 9;
FIG. 14 is a top view of FIG. 9;
FIG. 15 is a bottom view of FIG. 9; and,
FIG. 16 is a perspective view showing the foldable bicycle frame of FIG. 9 being assembled on a foldable bicycle.
The broken lines illustrate environmental structure and form no part of the claimed design.