3D printing pen

The ornamental design for a 3d printing pen, as shown and described.

FIG. 1 is a perspective view of a 3D printing pen, showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a left view thereof.

FIG. 5 is a right view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

Patent	Priority	Assignee	Title
D884787,	Aug 30 2018	SHENZHEN SETOO TECHNOLOGY CO ,LTD	Robot pen

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Oct 23 2016		Honghui, Wei	(assignment on the face of the patent)

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