The ornamental design for a piezoelectricanionlamp, as shown and described.
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FIG. 1 is a front elevational view of a piezoelectric anion lamp showing our new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a top plan view thereof,
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a front, left, perspective view thereof.