US D451842 S1
FIG. 1 is a top perspective view of a locking buckle according to the invention.
FIG. 2 is a top plan view thereof.
FIG. 3 is a side view thereof, the opposing side view being identical.
FIG. 4 is a bottom plan view thereof.
FIG. 5 is a front end view thereof; and,
FIG. 6 is a rear end view thereof.
The broken line portions of the Figures are for illustrative purposes only and form no part of the claimed design.