Mattress

The ornamental design for a mattress, as shown and described.

FIG. 1 shows a perspective view of the mattress.

FIG. 2 shows a front view of the present design.

FIG. 3 shows a rear view of the present design.

FIG. 4 shows a left side view of the present design.

FIG. 5 shows a top view of the present design; and,

FIG. 6 shows a bottom view of the present design.

Patent	Priority	Assignee	Title
D892335,	Oct 17 2017	SHENZHEN NOVOCARE MEDICAL TECHNOLOGY CO , INC	ECG measurement and data collection cushion pad
D905475,	Apr 30 2019		Inflatable sleeping pad
D927886,	Jun 20 2019	MiDAS H&T Inc.	Mattress
D982359,	Dec 10 2019	DONGGUAN HONGYU PLASTIC CO., LTD	Air mattress

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Mar 26 2014	CHANG, CHENG-WEI	JOINWIN TECHNOLOGY CO , LTD	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	032658	0985	pdf
Apr 04 2014		Joinwin Technology Co., Ltd.	(assignment on the face of the patent)

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