The ornamental design for a restaurantservicecartutensilholder, as shown and described.
FIG. 1 shows a front top left perspective view of the restaurant service cart utensil holder.
FIG. 2 shows a front elevation view thereof.
FIG. 3 shows a top plan view thereof.
FIG. 4 shows a left side elevation view thereof.
FIG. 5 shows a right side elevation view thereof.
FIG. 6 shows a rear elevation view thereof.
FIG. 7 shows a bottom plan view thereof.
FIG. 8 shows a bottom perspective view thereof; and,
FIG. 9 shows a perspective view of the restaurant service cart utensil holder with the service cart and trash holder to illustrate the environment in which it is used.
The broken lines shown in the FIG. 9 are included for the purpose of illustrating environment and form no part of the claimed design.