The ornamental design for a cortripodtrolley, as shown and described.
FIG. 1 is a perspective view of a COR tripod trolley showing our new 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 view thereof:
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines shown in the figures are included for the purpose of illustrating portions of the COR tripod trolley and forms no part of the claimed design.