Heat sink

The ornamental design for a heat sink, as shown.

FIG. 1 is a perspective view of a heat sink showing the petitioner's design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a left-side, elevational view thereof.

FIG. 5 is a right-side, elevational view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Nov 22 2010	YU, MENG-CHE	HON HAI PRECISION INDUSTRY CO , LTD	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	025540	0473	pdf
Dec 27 2010		Hon Hai Precision Industry Co., Ltd.	(assignment on the face of the patent)
Jan 12 2018	HON HAI PRECISION INDUSTRY CO , LTD	CLOUD NETWORK TECHNOLOGY SINGAPORE PTE LTD	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	045281	0269	pdf

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