The ornamental design of the cultivator, as shown and described.
FIG. 1 is a perspective view of an embodiment of the cultivator showing the design;
FIG. 2 is a second perspective view of the device illustrated in FIG. 1;
FIG. 3 is a rear view thereof;
FIG. 4 is a side view thereof;
FIG. 5 is a a top view thereof;
FIG. 6 is rear view of the cultivator in a second configuration;
FIG. 7 is front view thereof;
FIG. 8 is a perspective view of the cultivator in a third configuration;
FIG. 9 is a perspective view of the cultivator in a fourth configuration;
FIG. 10 is a side view thereof;
FIG. 11 is a front perspective view thereof; and,
FIG. 12 is another perspective view of the cultivator in the fourth configuration shown in a working environment.
The broken line showing of a tractor in FIG. 12 is included for the purpose of illustrating environmental structure only and forms no part of the claimed design.