The ornamental design for a projector, as shown and described.
FIG. 1 is a front, right side, top perspective view of a projector showing our new design, shown in a reduced scale;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational 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; and,
FIG. 7 is a bottom plan view thereof.
The broken lines shown in FIGS. 1 and 2 that are immediately adjacent to the shaded areas, and define unshaded areas, represent the bounds of the claimed design while all other broken lines represent environmental structure and are for illustrative purposes only; the broken lines form no part of the claimed design.