Three ring card stock holder

I claim the ornamental design for a three ring card stock holder, as shown and described.

FIG. 1 is a front view of the three ring card stock holder.

FIG. 2 is a right side view of the claimed design.

FIG. 3 is a left side view of the claimed design.

FIG. 4 is a top view of the claimed design.

FIG. 5 is a bottom view of the claimed design; and,

FIG. 6 is a perspective view of the claimed design.

Patent	Priority	Assignee	Title
D893610,	Aug 03 2018	Pup Quiz, LLC	Flashcard

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WO9834797,

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