We claim the ornamental design for a fluorescent lampholder, as shown and described.
FIG. 1 is a front elevational view of a fluorescent lamp holder showing my new design;
FIG. 2 is a rear elevational view of FIG. 1;
FIG. 3 is a right side elevational view of FIG. 1, the left side being a mirror image thereof;
FIG. 4 is a top plan view of FIG. 1;
FIG. 5 is a bottom plan view of FIG. 1;
FIG. 6 is a front elevational view showing a second embodiment thereof;
FIG. 7 is a rear elevational view of FIG. 6;
FIG. 8 is a right side elevational view of FIG. 6, the left side being a mirror image thereof;
FIG. 9 is a top plan view of FIG. 6; and,
FIG. 10 is a bottom plan view of FIG. 6.
The broken line showing of a circular area in FIGS. 2 and 7 are included for the purpose of illustrating environmental structure and forms no part of the claimed design.