Concrete mixer

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

FIG. 1 is a left side view of a concrete mixer, showing my new design, the right side being identical;

FIG. 2 is a top view;

FIG. 3 is a rear end view;

FIG. 4 is a front end view;

FIG. 5 is a left side view thereof, shown in a tilt position.

Patent	Priority	Assignee	Title
D500506,	Jul 14 2003	BELLE ENGINEERING SHEEN LIMITED	Coupling between cement mixing chamber and stand
D500771,	Jul 14 2003	BELLE ENGINEERING SHEEN LIMITED	Control arm for cement mixer
D504135,	Jul 14 2003	BELLE ENGINEERING SHEEN LIMITED	Cement mixer assembly
D527391,	Oct 12 2004	Imer U.S.A., Inc.	Concrete drum portable mixer
D557064,	Sep 11 2006		Food battering machine
D588166,	Dec 10 2007	Lycon Inc.	Portable mortar hopper
D671563,	Apr 20 2011	MORETTO S P A	Hopper
D671564,	Apr 20 2011	MORETTO S P A	Hopper
D672789,	Jan 09 2012	Bon Tool Co.; BON TOOL CO	Portable mixing, transporting and dispensing device
D760807,	Feb 02 2015	WESTERN MATERIALS AND DESIGN, LLC	Concrete mixing device
D776723,	Apr 15 2015	PMP PRO-MEC S P A	Drive for the drum of a concrete mixer
D777802,	Apr 15 2015	PMP PRO-MEC S P A	Drive and drum of a concrete mixer

Patent	Priority	Assignee	Title
2805053,
3612490,
D246715,	Sep 02 1976		Mobile mixer
D256800,	Aug 21 1978	American Equipment Corporation	Portable mixer
D278150,	May 09 1983	WORKSAVER, INC , AN IL CORP	Mixer
D299722,	Oct 07 1985		Cement mixer

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