Light bulb filament

[0001]FIG. 1 is a front perspective view of the light bulb filament showing our new design;

[0002]FIG. 2 is a front view of the light bulb filament;

[0003]FIG. 3 is a rear view of the light bulb filament;

[0004]FIG. 4 is a left side view of the light bulb filament;

[0005]FIG. 5 is a right side view of the light bulb filament;

[0006]FIG. 6 is a top plan view of the light bulb filament;

[0007]FIG. 7 is a bottom plan view of the light bulb filament;

[0008]FIG. 8 is an enlarged top plan view of the light bulb filament; and,

[0009]FIG. 9 is an enlarged bottom plan view of the light bulb filament.

[0010]The broken lines depicting the base and stem illustrate unclaimed subject matter for the design.