The ornamental design for a platformlifttrailer, as shown and described.
FIG. 1 is a perspective view of a platform lift trailer according to the present invention;
FIG. 2 is a perspective view of the platform lift trailer of FIG. 1 with the lift platform in a raised, open position;
FIG. 3 is a perspective view of the platform lift trailer of FIG. 1;
FIG. 4 is a perspective view of the platform lift trailer of FIG. 1;
FIG. 5 is a front elevation view of the platform lift trailer of FIG. 1;
FIG. 6 is a rear elevation view of the platform lift trailer of FIG. 1;
FIG. 7 is a left side elevation view of the platform lift trailer of FIG. 1;
FIG. 8 is a right side elevation view of the platform lift trailer of FIG. 1;
FIG. 9 is a top plan view of the platform lift trailer of FIG. 1;
FIG. 10 is a bottom plan view of the platform lift trailer of FIG. 1;
FIG. 11 is a perspective view of the platform lift trailer of FIG. 1 with the lift platform in a raised, folded position; and,
FIG. 12 is a perspective view of the platform lift trailer of FIG. 1 with the lift platform in a lowered, open position.
The broken line shown in the figures is included for the purpose of illustrating elements of the platform lift trailer and forms no part of the claimed design.