FIG. 1 is a top left perspective view of an electrode holder;
FIG. 2 is a top left perspective view of the electrode holder of FIG. 1 shown in environmental use;
FIG. 3 is a top right perspective view of the electrode holder of FIG. 1;
FIG. 4 is a top view of the electrode holder of FIG. 1;
FIG. 5 is a right view of the electrode holder of FIG. 1;
FIG. 6 is a left view of the electrode holder of FIG. 1;
FIG. 7 is a front view of the electrode holder of FIG. 1;
FIG. 8 is a bottom view of the electrode holder of FIG. 1;
FIG. 9 is a bottom right perspective view of the electrode holder of FIG. 1;
FIG. 10 is a bottom right perspective view of the electrode holder of FIG. 1 shown in environmental use;
FIG. 11 is a bottom left perspective view of the electrode holder of FIG. 1;
FIG. 12 is a back view of the electrode holder of FIG. 1;
FIG. 13 is a top left perspective view of another embodiment of an electrode holder;
FIG. 14 is a top left perspective view of the electrode holder of FIG. 13 shown in environmental use;
FIG. 15 is a top right perspective view of the electrode holder of FIG. 13;
FIG. 16 is a top view of the electrode holder of FIG. 13;
FIG. 17 is a right view of the electrode holder of FIG. 13;
FIG. 18 is a left view of the electrode holder of FIG. 13;
FIG. 19 is a front view of the electrode holder of FIG. 13;
FIG. 20 is a bottom view of the electrode holder of FIG. 13;
FIG. 21 is a bottom right perspective view of the electrode holder of FIG. 13;
FIG. 22 is a bottom right perspective view of the electrode holder of FIG. 13 shown in environmental use;
FIG. 23 is a bottom left perspective view of the electrode holder of FIG. 13; and,
FIG. 24 is a back view of the electrode holder of FIG. 13.
The broken lines shown in the figures represent the environmental portions that form no part of the claimed design.