The ornamental design for an umbrella handle, as shown and described.
FIG. 1 is a perspective view of an umbrella handle showing a new design.
FIG. 2 is a front elevation view of the handle of FIG. 1.
FIG. 3 is a rear elevation view of the handle of FIG. 1.
FIG. 4 is a first side elevation view of the handle of FIG. 1.
FIG. 5 is a second side elevation view of the handle of FIG. 1, opposite to the first side elevation view of FIG. 4.
FIG. 6 is a top plan view of the handle of FIG. 1; and,
FIG. 7 is a bottom plan view of the handle of FIG. 1.
The evenly-spaced broken lines in the drawings are included for purpose of illustrating portions of the umbrella handle that form no part of the claimed design. The dot-dash-dot broken lines in the drawings are included for the purpose of defining the boundary of the claim, it being understood that the dot-dash-dot broken lines themselves form no part of the claimed design. The defined boundary represents a repeatable unit of the claimed design.