The ornamental design for a spreadercarrier, as shown and described.
FIG. 1 is a perspective view of a spreader carrier showing my new design;
FIG. 2 is a right side view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a front side view thereof;
FIG. 5 is a rear side view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is an alternate perspective view thereof shown in use condition, attached to the front of a vehicle.
The broken line showing of various surface elements in FIGS. 1-8 is included for the purpose of illustrating unclaimed portions of the spreader carrier and the showing of a vehicle in FIG. 8 is for environmental purposed only and forms no part of the claimed design.