Livestock water trough heater

FIG. 1 is a perspective view showing my new design for a livestock water trough heater;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a rear elevational view thereof; and,

FIG. 8 is an environmental perspective view of the livestock water trough heater, shown in use.

The broken lines in the drawings depict exemplary environment and component elements that might be used in conjunction with the livestock water trough heater that are shown for purposes of illustration, and form no part of the design claim.