Piston

We claim the ornamental design for a piston, as shown and described.

FIG. 1 is a perspective view of an embodiment of a piston showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevation view thereof, the opposing side elevation view being a mirror image;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a cross-sectional side elevation view thereof taken along line 5-5 of FIG. 3.

Patent	Priority	Assignee	Title
D726875,	Mar 04 2014	ACRO ASSOCIATES, INC	Valve head
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Patent	Priority	Assignee	Title
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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Dec 02 2011		Sandvik Intellectual Property AB	(assignment on the face of the patent)
May 04 2012	KAHRA, OSSI	Sandvik Intellectual Property AB	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	028163	0754	pdf

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