Self defense key ring

The ornamental design for a self defense key ring, as shown and described.

FIG. 1 is a front elevational view of a self defense key ring showing my design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a bottom plan view thereof.

Patent	Priority	Assignee	Title
D301513,	Feb 13 1987		Combined whistle, key holder, and striking weapon
D348771,	Sep 14 1992		Combined key ring and extendable, self-defensive baton
D352339,	Nov 22 1993		Combined self defense weapon and key holder
D866954,	Mar 29 2018		Keychain

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