Light bulb filament

USD1105511SActive Publication Date: 2025-12-09CARTIER INTERNATIONAL AG

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

[0002] FIG. 2 is a rear elevational view thereof;

[0003] FIG. 3 is a top plan view thereof;

[0004] FIG. 4 is a bottom plan view thereof;

[0005] FIG. 5 is a left-side elevational view thereof;

[0006] FIG. 6 is a right-side elevational view thereof; and,

[0007] FIG. 7 is a front, right-side, top perspective view thereof.

[0008] The broken lines depict parts of the light bulb filament that form no part of the claimed design.

The ornamental design for a light bulb filament as shown and described.