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The ornamental design for an electrostatic plasma display column device, as shown and described.
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FIG. 1 is a perspective view of my design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a right side view, the left side view being a mirror image thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a perspective view of a second embodiment of my design, with the remaining views corresponding to FIGS. 3-6.
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