Ballpoint pen

The ornamental design for a ballpoint pen, as shown and described.

FIG. 1 is a front view of a ballpoint pen of the present invention;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom view thereof.

Patent	Priority	Assignee	Title
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D673610,	Apr 18 2011	MITSUBISHI PENCIL COMPANY, LIMITED	Pen
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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Mar 23 2010		Ritter Pen GmbH	(assignment on the face of the patent)

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