Electrocardiogram Recorder

FIG. 1 is a front perspective view of an electrocardiogram recorder in accordance with our new and ornamental design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof, wherein the broken lines form no part of the claimed design; and,

FIG. 8 is a reference view showing the electrocardiogram recorder connected to a charger, and the charger and broken lines depicting it present environmental structure and form no part of the claimed design.