FIG. 1 is a perspective view of a fluid injection apparatus of our design, showing our design as part of a fluid delivery system;
FIG. 2 is a perspective view showing the fluid injection apparatus of our design;
FIG. 3 is a left side view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a rear view thereof;
FIG. 7 is a right side view thereof; and,
FIG. 8 is a bottom view thereof.
The broken line showing is for illustrative purposes only and forms no part of the claimed design.