USD550154S1 - Lighting ballast - Google Patents

Description

FIG. 1 shows a perspective view of a lighting ballast according to a first embodiment of the present invention.

FIG. 2 shows a right elevation view of the lighting ballast of FIG. 1.

FIG. 3 shows a left elevation view of the lighting ballast of FIG. 1.

FIG. 4 shows a front view of the lighting ballast of FIG. 1.

FIG. 5 shows a rear view of the lighting ballast of FIG. 1.

FIG. 6 shows a top view of the lighting ballast of FIG. 1.

FIG. 7 shows a perspective view of a lighting ballast according to another embodiment of the present invention.

FIG. 8 shows a right elevation view of the lighting ballast of FIG. 7.

FIG. 9 shows a left elevation view of the lighting ballast of FIG. 7.

FIG. 10 shows a front view of the lighting ballast of FIG. 7.

FIG. 11 shows a rear view of the lighting ballast of FIG. 7; and,

FIG. 12 shows a top view of the lighting ballast of FIG. 7.

The broken lines shown are for illustrative purposes and form no part of the claimed design.

Claims (1)

1. The ornamental design for lighting ballast, as shown and described.

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