Batch mixer

The ornamental design for a batch mixer, as shown and described.

FIG. 1 is a front left perspective view of a batch mixer showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right end view thereof; and,

FIG. 4 is a rear right perspective view thereof.

The portions shown in broken lines form no part of the claimed design.

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Aug 17 2011		Buhler AG	(assignment on the face of the patent)
Oct 20 2011	FANCELLI, PAOLO	Buhler AG	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	027144	0062	pdf

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