Key chain

The ornamental design for a key chain as shown and described.

FIG. 1 is a perspective view of a key chain showing my new design;

FIG. 2 is a top plan view, the opposite side view being identical;

FIG. 3 is a front elevational view, the opposite side view being identical;

FIG. 4 is a right side elevational view, the left side view being identical .

Patent	Priority	Assignee	Title
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5261257,	Jan 30 1992	HARMONY FASTENING SYSTEMS, INC	Separable keyholder with multiple keyrings
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D569620,	May 17 2006	The Finding IP Holding Company LLC	Hanging clip
D677438,	Dec 13 2011	Sunbeam Products, Inc.	Bark control device housing
D717198,	Dec 10 2012		Device for securing an ornamental element
D964193,	Jul 07 2021	Foshan Xiaochengli Pet Products Co., Ltd.	Tracker case
D972949,	Jun 17 2021	Guangzhou Dianhou Household Products Co., Ltd.; GUANGZHOU DIANHOU HOUSEHOLD PRODUCTS CO , LTD	Tracker case
D973521,	Jun 18 2021	Guangzhou Dianhou Household Products Co., Ltd.	Tracker case
D976583,	Aug 19 2021		Tracking device case
D978524,	Mar 11 2021		Luggage tag

Patent	Priority	Assignee	Title
3177546,
3192747,
3863477,
235385,
D251274,	Mar 07 1977	SHEAFFER INC , A DE CORP ; CROWNMARK CORPORATION, A RHODE ISLAND CORP	Key holder

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