Building block

The ornamental design for a building block, as shown and described.

FIG. 1 is a top perspective view of the building block of the present invention.

FIG. 2 is a bottom perspective view of the building block shown in FIG. 1.

FIG. 3 is a top plan view of the building block shown in FIG. 1.

FIG. 4 is a bottom plan view of the building block shown in FIG. 1; and,

FIG. 5 is a front plan view of the building block in FIG. 1, with rear, left side, and right side plan views being identical.

Patent	Priority	Assignee	Title
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D696360,	Jul 11 2011	LEGO A S	Building block from a toy building set
D701925,	Nov 16 2012	Lego A/S	Building block from a toy building set
D707756,	Nov 16 2012	Lego A/S	Building block from a toy building set
D714401,	Jan 29 2014		Building block
D749680,	Feb 06 2015		Building block
D757862,	Nov 25 2014	Lego A/S	Building block for a toy building set
D771200,	Nov 25 2014	Lego A/S	Building block for a toy building set
D806181,	Dec 30 2015	LEGO A S	Building block for a toy building set
D818056,	Jul 10 2015	Delsun Co., Ltd.	Building block
D849853,	Feb 07 2018	FLYCATCHER CORP LTD	Toy block

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