The ornamental design for a electropneumatichorn, as shown and described.
FIG. 1 is a front perspective view of an electropneumatic horn showing our new design.
FIG. 2 is a front elevational view of FIG. 1.
FIG. 3 is a rear elevational view of FIG. 1.
FIG. 4 is a right side elevational view of FIG. 1.
FIG. 5 is a left side elevation view of FIG. 1.
FIG. 6 is a top plan view of FIG. 1; and,
FIG. 7 is bottom plan view of FIG. 1.
The portions shown in FIGS. 1-7 in dashed lines, designate features that are not claimed and are shown for illustration purposes only, and do not contribute to the claimed design.