Back ferrule

Abstract

Claims

We claim the ornamental design for a back ferrule, as shown and described.

Description

(1) FIG. 1 is a left side elevational view of a back ferrule, the right side elevational, top plan, and bottom plan views being identical thereto;

(2) FIG. 2 is a rear elevational view thereof;

(3) FIG. 3 is a front elevational view thereof; and,

(4) FIG. 4 is a cross-sectional view thereof, taken along the line 4-4 of FIG. 3.